diff --git a/application/controllers/api/frontend/v1/LvPlan.php b/application/controllers/api/frontend/v1/LvPlan.php
index 2a900e92d..36054003c 100644
--- a/application/controllers/api/frontend/v1/LvPlan.php
+++ b/application/controllers/api/frontend/v1/LvPlan.php
@@ -49,6 +49,8 @@ class LvPlan extends FHCAPI_Controller
 			'getLehrverband' => self::PERM_LOGGED,
 			'permissionOtherLvPlan' => self::PERM_LOGGED,
 			'compactibleEventTypes' => self::PERM_LOGGED,
+			'getLeEvents' => self::PERM_LOGGED,
+			'getLvEvents' => self::PERM_LOGGED,
 		]);
 
 		$this->load->library('LogLib');
@@ -60,7 +62,13 @@ class LvPlan extends FHCAPI_Controller
 			'dbExecuteUser' => 'RESTful API'
 		));
 
-		$this->load->library('form_validation');
+        $this->load->library('form_validation');
+		$this->load->library('PhrasesLib');
+		$this->loadPhrases(
+			array(
+				'ui'
+			)
+		);
 	}
 
 	//------------------------------------------------------------------------------------------------------------------
@@ -196,6 +204,38 @@ class LvPlan extends FHCAPI_Controller
 		));
 	}
 
+	public function getLeEvents($le_id = null, $start_date = null, $end_date = null, $stundenplan = 'stundenplandev')
+	{
+
+		if (is_null($le_id) || is_null($start_date) || is_null($end_date))
+			$this->terminateWithError($this->p->t('ui', 'ungueltigeParameter'), self::ERROR_TYPE_GENERAL);
+
+		if ($stundenplan !== 'stundenplandev' && $stundenplan !== 'stundenplan')
+			$this->terminateWithError($this->p->t('ui', 'ungueltigeParameter'), self::ERROR_TYPE_GENERAL);
+
+		$this->load->library('StundenplanLib');
+
+		$result = $this->stundenplanlib->getEventsByLE($le_id, $start_date, $end_date, $stundenplan);
+		$lvplanEvents = $this->getDataOrTerminateWithError($result);
+
+		$this->terminateWithSuccess($lvplanEvents);
+	}
+
+	public function getLvEvents($lv_id = null, $start_date = null, $end_date = null, $stundenplan = 'stundenplandev')
+	{
+		if (is_null($lv_id) || is_null($start_date) || is_null($end_date))
+			$this->terminateWithError($this->p->t('ui', 'ungueltigeParameter'), self::ERROR_TYPE_GENERAL);
+
+		if ($stundenplan !== 'stundenplandev' && $stundenplan !== 'stundenplan')
+			$this->terminateWithError($this->p->t('ui', 'ungueltigeParameter'), self::ERROR_TYPE_GENERAL);
+
+		$this->load->library('StundenplanLib');
+
+		$result = $this->stundenplanlib->getEventsByLV($lv_id, $start_date, $end_date, $stundenplan);
+
+		$this->terminateWithSuccess(hasData($result) ? getData($result) : []);
+	}
+
 	//TODO: delete this function if we don't use the old calendar export endpoints anymore
 	public function studiensemesterDateInterval($date)
 	{
diff --git a/application/controllers/api/frontend/v1/lv/Config.php b/application/controllers/api/frontend/v1/lv/Config.php
new file mode 100644
index 000000000..4f39c6b8b
--- /dev/null
+++ b/application/controllers/api/frontend/v1/lv/Config.php
@@ -0,0 +1,86 @@
+<?php
+
+if (!defined('BASEPATH'))
+	exit('No direct script access allowed');
+
+class Config extends FHCAPI_Controller
+{
+	private $_ci;
+	private $_uid;
+
+	public function __construct()
+	{
+		parent::__construct([
+			'get' => ['admin:r', 'assistenz:r'],
+			'set' => ['admin:r', 'assistenz:r'],
+		]);
+
+		$this->_ci = &get_instance();
+		$this->_setAuthUID();
+
+		$this->loadPhrases([
+			'lehre'
+		]);
+
+		$this->_ci->load->library('VariableLib', ['uid' => $this->_uid]);
+		$this->_ci->load->library('PermissionLib');
+
+	}
+
+
+	public function get()
+	{
+		if (!($this->permissionlib->isBerechtigt('basis/tempus')) && !($this->permissionlib->isBerechtigt('lv-plan')))
+			$this->terminateWithSuccess([]);
+
+		$ignore_kollision = $this->_ci->variablelib->getVar('ignore_kollision');
+		$ignore_zeitsperre = $this->_ci->variablelib->getVar('ignore_zeitsperre');
+		$ignore_reservierung = $this->_ci->variablelib->getVar('ignore_reservierung');
+
+		$config['ignore_kollision'] = [
+			"type" => "checkbox",
+			"label" => 'ignore_kollision',
+			"value" => $ignore_kollision,
+		];
+
+		$config['ignore_zeitsperre'] = [
+			"type" => "checkbox",
+			"label" => 'ignore_zeitsperre',
+			"value" => $ignore_zeitsperre,
+		];
+
+		$config['ignore_reservierung'] = [
+			"type" => "checkbox",
+			"label" => 'ignore_reservierung',
+			"value" => $ignore_reservierung,
+		];
+
+		$this->terminateWithSuccess($config);
+	}
+	public function set()
+	{
+		if (!($this->permissionlib->isBerechtigt('basis/tempus')) && !($this->permissionlib->isBerechtigt('lv-plan')))
+			$this->terminateWithSuccess([]);
+
+		$this->load->model('system/Variable_model', 'VariableModel');
+
+		foreach (['ignore_kollision','ignore_zeitsperre','ignore_reservierung'] as $variable)
+		{
+			if ($this->_ci->input->post($variable) !== null)
+			{
+				$this->VariableModel->update(array('uid' => $this->_uid, 'name' => $variable), array('wert' => $this->input->post($variable)));
+
+			}
+		}
+
+		$this->terminateWithSuccess();
+	}
+
+	private function _setAuthUID()
+	{
+		$this->_uid = getAuthUID();
+
+		if (!$this->_uid)
+			show_error('User authentification failed');
+	}
+}
diff --git a/application/controllers/api/frontend/v1/lv/Gruppe.php b/application/controllers/api/frontend/v1/lv/Gruppe.php
index daebe8a61..f60d3a99a 100644
--- a/application/controllers/api/frontend/v1/lv/Gruppe.php
+++ b/application/controllers/api/frontend/v1/lv/Gruppe.php
@@ -15,6 +15,7 @@ class Gruppe extends FHCAPI_Controller
 			'getBenutzerSearch' => ['admin:r', 'assistenz:r'],
 			'getAllSearch' => ['admin:r', 'assistenz:r'],
 			'getByLehreinheit' => ['admin:r', 'assistenz:r'],
+			'getGruppe' => ['admin:r', 'assistenz:r'],
 		]);
 
 		$this->_ci = &get_instance();
@@ -67,7 +68,7 @@ class Gruppe extends FHCAPI_Controller
 
 		$this->checkPermission($lehreinheit_id);
 
-		$result = $this->_ci->LehreinheitgruppeModel->addGroup($lehreinheit_id, $gid, !($lehrverband === 'false'));
+		$result = $this->_ci->LehreinheitgruppeModel->addGroup($lehreinheit_id, $gid, $lehrverband === true || $lehrverband === 'true');
 
 		if (isError($result))
 			$this->terminateWithError(getError($result));
@@ -75,6 +76,71 @@ class Gruppe extends FHCAPI_Controller
 		$this->terminateWithSuccess($result);
 	}
 
+	public function getGruppe()
+	{
+		$lehrverband = $this->input->post('lehrverband');
+
+		$gruppen_result = array();
+
+		if ($lehrverband === false)
+		{
+			$gruppen_result = $this->_ci->GruppeModel->loadWhere(array(
+				'studiengang_kz' => $this->input->post('stg_kz'),
+				'gruppe_kurzbz' => $this->input->post('gruppe_kurzbz'),
+				'aktiv' => true
+			));
+		}
+		else if ($lehrverband === true)
+		{
+
+			if (!isEmptyString($this->input->post('verband')))
+			{
+				$this->LehrverbandModel->db->where('verband', $this->input->post('verband'));
+			}
+			else
+			{
+				$this->LehrverbandModel->db->group_start();
+				$this->LehrverbandModel->db->where("trim(verband) = ''");
+				$this->LehrverbandModel->db->or_where("verband IS NULL");
+				$this->LehrverbandModel->db->group_end();
+			}
+
+			if (!isEmptyString($this->input->post('gruppe')))
+			{
+				$this->LehrverbandModel->db->where('gruppe', $this->input->post('gruppe'));
+			}
+			else
+			{
+				$this->LehrverbandModel->db->group_start();
+				$this->LehrverbandModel->db->where("trim(gruppe) = ''");
+				$this->LehrverbandModel->db->or_where("gruppe IS NULL");
+				$this->LehrverbandModel->db->group_end();
+			}
+
+			if (!isEmptyString((string)$this->input->post('semester')))
+			{
+				$this->LehrverbandModel->db->where('semester', $this->input->post('semester'));
+			}
+			else
+			{
+
+				$this->LehrverbandModel->db->group_start();
+				$this->LehrverbandModel->db->where("semester = ''");
+				$this->LehrverbandModel->db->or_where("semester IS NULL");
+				$this->LehrverbandModel->db->group_end();
+			}
+
+			$gruppen_result = $this->LehrverbandModel->loadWhere(array('studiengang_kz' => $this->input->post('stg_kz'), 'aktiv' => true));
+		}
+
+		if (!hasData($gruppen_result))
+			return $this->terminateWithError('No group found');
+
+		$gruppen_array = getData($gruppen_result)[0];
+
+		$this->terminateWithSuccess($gruppen_array->gid);
+	}
+
 	public function getByLehreinheit($lehreinheit_id = null)
 	{
 		if (is_null($lehreinheit_id) || !ctype_digit((string)$lehreinheit_id))
diff --git a/application/controllers/api/frontend/v1/lv/Lektor.php b/application/controllers/api/frontend/v1/lv/Lektor.php
index cce7f6e8b..64cfd3f1c 100644
--- a/application/controllers/api/frontend/v1/lv/Lektor.php
+++ b/application/controllers/api/frontend/v1/lv/Lektor.php
@@ -134,9 +134,14 @@ class Lektor extends FHCAPI_Controller
 			$this->terminateWithValidationErrors($this->form_validation->error_array());
 		}
 
-		if (isset($formData['semesterstunden']) && (!is_numeric($formData['semesterstunden']) || $formData['semesterstunden'] === ''))
+		$nullable_fields = array('semesterstunden', 'stundensatz', 'planstunden');
+
+		foreach ($nullable_fields as $nullable_field)
 		{
-			$formData['semesterstunden'] = null;
+			if (isset($formData[$nullable_field]) && (!is_numeric($formData[$nullable_field]) || $formData[$nullable_field] === ''))
+			{
+				$formData[$nullable_field] = null;
+			}
 		}
 
 		$lehreinheit_permission = $this->checkPermission($lehreinheit_id, array('admin', 'assistenz', 'lv-plan'));
@@ -144,6 +149,9 @@ class Lektor extends FHCAPI_Controller
 		if (!$lehreinheit_permission)
 			$this->terminateWithError($this->p->t('ui', 'error_fieldWriteAccess'));
 
+		if (!is_null($this->getLektorVertrag($lehreinheit_id, $mitarbeiter_uid)) && (array_key_exists('mitarbeiter_uid', $formData) && $mitarbeiter_uid !== $formData['mitarbeiter_uid']))
+			$this->terminateWithError($this->p->t('ui', 'error_fieldWriteAccess'));
+
 		$result = $this->_ci->lektorlib->updateLektorFromLehreinheit($lehreinheit_id, $mitarbeiter_uid, $formData);
 
 		if (isError($result)) $this->terminateWithError(getError($result));
@@ -154,7 +162,7 @@ class Lektor extends FHCAPI_Controller
 	{
 		$value = str_replace(',', '.', $value);
 
-		if (!is_numeric($value))
+		if (!is_numeric($value) && $value !== "")
 		{
 			$this->form_validation->set_message('_check_decimal', 'Das Feld {field} muss eine Zahl sein.');
 			return false;
diff --git a/application/controllers/api/frontend/v1/lv/Noten.php b/application/controllers/api/frontend/v1/lv/Noten.php
new file mode 100644
index 000000000..614ee6609
--- /dev/null
+++ b/application/controllers/api/frontend/v1/lv/Noten.php
@@ -0,0 +1,84 @@
+<?php
+if (! defined('BASEPATH')) exit('No direct script access allowed');
+
+class Noten extends FHCAPI_Controller
+{
+	public function __construct()
+	{
+		parent::__construct([
+			'getCertificate' => 'student/noten:r',
+			'getTeacherProposal' => 'student/noten:r',
+		]);
+
+		// Load Libraries
+		$this->load->library('VariableLib', ['uid' => getAuthUID()]);
+
+		// Load Phrases
+		$this->loadPhrases([
+			'stv',
+			'person',
+			'lehre'
+		]);
+	}
+
+	public function getCertificate($lv_id, $studiensemester_kurzbz = null)
+	{
+		if (is_null($lv_id) || !ctype_digit((string)$lv_id))
+			$this->terminateWithError( $this->p->t('ui', 'ungueltigeParameter'), self::ERROR_TYPE_GENERAL);
+
+		$this->load->model('education/lehrveranstaltung_model', 'LehrveranstaltungModel');
+		$this->load->model('education/Zeugnisnote_model', 'ZeugnisnoteModel');
+		$this->load->model('organisation/Studiensemester_model', 'StudiensemesterModel');
+
+		$result = $this->LehrveranstaltungModel->loadWhere([
+			'lehrveranstaltung_id' => $lv_id
+		]);
+
+		$lehrveranstaltung = $this->getDataOrTerminateWithError($result);
+
+		if (!$lehrveranstaltung)
+			$this->terminateWithSuccess([]);
+
+		if ($studiensemester_kurzbz !== null && !$this->StudiensemesterModel->isValidStudiensemester($studiensemester_kurzbz))
+		{
+			$this->terminateWithError($studiensemester_kurzbz . ' - ' . $this->p->t('lehre', 'error_noStudiensemester'));
+		}
+
+		$result = $this->ZeugnisnoteModel->getZeugnisnoten(null, $studiensemester_kurzbz, $lehrveranstaltung[0]->lehrveranstaltung_id);
+
+		$grades = $this->getDataOrTerminateWithError($result);
+
+		$this->terminateWithSuccess($grades);
+	}
+
+	public function getTeacherProposal($lv_id, $studiensemester_kurzbz = null)
+	{
+		if (is_null($lv_id) || !ctype_digit((string)$lv_id))
+			$this->terminateWithError( $this->p->t('ui', 'ungueltigeParameter'), self::ERROR_TYPE_GENERAL);
+
+		$this->load->model('education/lehrveranstaltung_model', 'LehrveranstaltungModel');
+		$this->load->model('education/Lvgesamtnote_model', 'LvgesamtnoteModel');
+		$this->load->model('organisation/Studiensemester_model', 'StudiensemesterModel');
+
+		$result = $this->LehrveranstaltungModel->loadWhere([
+			'lehrveranstaltung_id' => $lv_id
+		]);
+
+		$lehrveranstaltung = $this->getDataOrTerminateWithError($result);
+
+		if (!$lehrveranstaltung)
+			$this->terminateWithSuccess([]);
+
+		if ($studiensemester_kurzbz !== null && !$this->StudiensemesterModel->isValidStudiensemester($studiensemester_kurzbz))
+		{
+			$this->terminateWithError($studiensemester_kurzbz . ' - ' . $this->p->t('lehre', 'error_noStudiensemester'));
+		}
+
+		$result = $this->LvgesamtnoteModel->getLvGesamtNoten($lv_id, null, $studiensemester_kurzbz);
+
+		$grades = $this->getDataOrTerminateWithError($result);
+
+		$this->terminateWithSuccess($grades);
+	}
+
+}
diff --git a/application/controllers/api/frontend/v1/lv/Setup.php b/application/controllers/api/frontend/v1/lv/Setup.php
index eea4befa5..4b91b99c1 100644
--- a/application/controllers/api/frontend/v1/lv/Setup.php
+++ b/application/controllers/api/frontend/v1/lv/Setup.php
@@ -19,6 +19,8 @@
 if (!defined('BASEPATH'))
 	exit('No direct script access allowed');
 
+use CI3_Events as Events;
+
 class Setup extends FHCAPI_Controller
 {
 	private $_ci;
@@ -27,7 +29,8 @@ class Setup extends FHCAPI_Controller
 	public function __construct()
 	{
 		parent::__construct([
-			'getTabs' => ['admin:r', 'assistenz:r'],
+			'getLETabs' => ['admin:r', 'assistenz:r'],
+			'getLVTabs' => ['admin:r', 'assistenz:r'],
 			'getStudiensemester' => ['admin:r', 'assistenz:r'],
 			'getSprache' => ['admin:r', 'assistenz:r'],
 			'getRaumtyp' => ['admin:r', 'assistenz:r'],
@@ -41,9 +44,10 @@ class Setup extends FHCAPI_Controller
 		$this->_ci->load->model('education/Lehrveranstaltung_model', 'LehrveranstaltungModel');
 
 		$this->_ci->load->library('VariableLib', ['uid' => $this->_uid]);
+		$this->_ci->load->helper('hlp_document');
 	}
 
-	public function getTabs()
+	public function getLETabs()
 	{
 		$tabs['details'] = array (
 			'title' =>  'Details',
@@ -60,11 +64,43 @@ class Setup extends FHCAPI_Controller
 			'component' => absoluteJsImportUrl('public/js/components/LVVerwaltung/Tabs/Lektor.js'),
 			'config' => []
 		);
+		$tabs['termine'] = array (
+			'title' =>  'Termine',
+			'component' => absoluteJsImportUrl('public/js/components/LVVerwaltung/Tabs/Termine.js'),
+			'config' => []
+		);
 		$tabs['notiz'] = array (
 			'title' =>  'Notizen',
 			'component' => absoluteJsImportUrl('public/js/components/LVVerwaltung/Tabs/Notiz.js'),
 			'config' => []
 		);
+
+		Events::trigger('lvv_conf_tabs', function & () use (&$tabs) {
+			return $tabs;
+		});
+
+		$this->terminateWithSuccess($tabs);
+	}
+
+	public function getLVTabs()
+	{
+		$tabs['termine'] = array (
+			'title' =>  'Termine',
+			'component' => absoluteJsImportUrl('public/js/components/LVVerwaltung/Tabs/LVTermine.js'),
+			'config' => []
+		);
+		$tabs['noten'] = array (
+			'title' =>  'Noten',
+			'component' => absoluteJsImportUrl('public/js/components/LVVerwaltung/Tabs/Noten.js'),
+			'config' => [
+				'usePoints' => defined('CIS_GESAMTNOTE_PUNKTE') && CIS_GESAMTNOTE_PUNKTE,
+				'edit' => 'both', // Possible values: both|header|inline
+				'delete' => 'inline', // Possible values: both|header|inline
+				'documents' => 'inline', // Possible values: both|header|inline
+				'documentslist' => gradesDocumentsList(),
+				'semesterSelect' => false
+			]
+		);
 		$this->terminateWithSuccess($tabs);
 	}
 
diff --git a/application/controllers/api/frontend/v1/stv/Config.php b/application/controllers/api/frontend/v1/stv/Config.php
index bc1fbebfe..cc6c04430 100644
--- a/application/controllers/api/frontend/v1/stv/Config.php
+++ b/application/controllers/api/frontend/v1/stv/Config.php
@@ -301,6 +301,7 @@ class Config extends FHCAPI_Controller
 
 	public function student()
 	{
+		$this->load->helper('hlp_document');
 		$result = [];
 		$config = $this->config->item('tabs');
 
@@ -376,9 +377,9 @@ class Config extends FHCAPI_Controller
 			'config' => [
 				'usePoints' => defined('CIS_GESAMTNOTE_PUNKTE') && CIS_GESAMTNOTE_PUNKTE,
 				'edit' => 'both', // Possible values: both|header|inline
-				'delete' => 'both', // Possible values: both|header|inline
-				'documents' => 'both', // Possible values: both|header|inline
-				'documentslist' => $this->gradesDocumentsList()
+				'delete' => 'inline', // Possible values: both|header|inline
+				'documents' => 'inline', // Possible values: both|header|inline
+				'documentslist' => gradesDocumentsList()
 			]
 		];
 
@@ -622,188 +623,6 @@ class Config extends FHCAPI_Controller
 		] + $this->kontoColumns();
 	}
 
-	/**
-	 * Helper function to generate the default documentslist config for the
-	 * grades tab.
-	 *
-	 * The resulting array consists of elements which are associative arrays
-	 * that can have the following entries:
-	 * title			(required) on the first level this can be HTML code.
-	 * permissioncheck	(optional) an URL to an FHCAPI endpoint which returns
-	 * 						true or false.
-	 * link				(optional) an URL that will be called if "action" and
-	 * 						"children" are not defined.
-	 * action			(optional) an associative array that describes an
-	 * 						POST action that will be called if "children" is
-	 * 						not defined.
-	 * 						It can have the following entries:
-	 * - url			(required) an URL to an FHCAPI endpoint.
-	 * - post			(optional) an associative array with the POST data to
-	 * 						be sent.
-	 * - response		(optional) a string that will be displayed on success.
-	 * children			(optional) an array of child elements
-	 *
-	 * All strings that start with { and end with } in the URLs and the
-	 * actions post parameter will be replaced with the corresponding
-	 * attribute of the current dataset (e.G: {uid} will be replaced with the
-	 * uid of the current dataset)
-	 *
-	 * @return array
-	 */
-	protected function gradesDocumentsList()
-	{
-		$permissioncheck = site_url("api/frontend/v1/documents/permissionAlternativeFormat/{studiengang_kz}");
-
-		$title_ger = $this->p->t("global", "deutsch");
-		$title_eng = $this->p->t("global", "englisch");
-		$title_ff = $this->p->t("stv", "document_certificate");
-		$title_lv = $this->p->t("stv", "document_coursecertificate");
-
-		$link_ff = "documents/export/" .
-			"zertifikat.rdf.php/" .
-			"Zertifikat" .
-			"?stg_kz={studiengang_kz_lv}" .
-			"&uid={uid}" .
-			"&ss={studiensemester_kurzbz}" .
-			"&lvid={lehrveranstaltung_id}";
-		$link_lv_ger = "documents/export/" .
-			"lehrveranstaltungszeugnis.rdf.php/" .
-			"LVZeugnis" .
-			"?stg_kz={studiengang_kz}" .
-			"&uid={uid}" .
-			"&ss={studiensemester_kurzbz}" .
-			"&lvid={lehrveranstaltung_id}";
-		$link_lv_eng = "documents/export/" .
-			"lehrveranstaltungszeugnis.rdf.php/" .
-			"LVZeugnisEng" .
-			"?stg_kz={studiengang_kz}" .
-			"&uid={uid}" .
-			"&ss={studiensemester_kurzbz}" .
-			"&lvid={lehrveranstaltung_id}";
-
-		$archive_url = "api/frontend/v1/documents/archiveSigned";
-		$archive_response = $this->p->t("stv", "document_signed_and_archived");
-		$archive_post_ff = [
-			"xml" => "zertifikat.rdf.php",
-			"xsl" => "Zertifikat",
-			"stg_kz" => "{studiengang_kz_lv}",
-			"uid" => "{uid}",
-			"ss" => "{studiensemester_kurzbz}",
-			"lvid" => "{lehrveranstaltung_id}"
-		];
-		$archive_post_lv_ger = [
-			"xml" => "lehrveranstaltungszeugnis.rdf.php",
-			"xsl" => "LVZeugnis",
-			"stg_kz" => "{studiengang_kz}",
-			"uid" => "{uid}",
-			"ss" => "{studiensemester_kurzbz}",
-			"lvid" => "{lehrveranstaltung_id}"
-		];
-		$archive_post_lv_eng = [
-			"xml" => "lehrveranstaltungszeugnis.rdf.php",
-			"xsl" => "LVZeugnisEng",
-			"stg_kz" => "{studiengang_kz}",
-			"uid" => "{uid}",
-			"ss" => "{studiensemester_kurzbz}",
-			"lvid" => "{lehrveranstaltung_id}"
-		];
-
-		$list = [
-			[
-				'title' => '<i class="fa fa-download" title="' . $this->p->t("stv", "document_download") . '"></i>',
-				'children' => [
-					[
-						'title' => $title_ff,
-						'link' => site_url($link_ff)
-					],
-					[
-						'title' => $title_lv,
-						'children' => [
-							[
-								'title' => $title_ger,
-								'link' => site_url($link_lv_ger),
-								'children' => [
-									[
-										'title' => 'PDF',
-										'permissioncheck' => $permissioncheck,
-										'link' => site_url($link_lv_ger)
-									],
-									[
-										'title' => 'DOC',
-										'permissioncheck' => $permissioncheck,
-										'link' => site_url($link_lv_ger . "&output=doc")
-									],
-									[
-										'title' => 'ODT',
-										'permissioncheck' => $permissioncheck,
-										'link' => site_url($link_lv_ger . "&output=odt")
-									]
-								]
-							],
-							[
-								'title' => $title_eng,
-								'link' => site_url($link_lv_eng),
-								'children' => [
-									[
-										'title' => 'PDF',
-										'permissioncheck' => $permissioncheck,
-										'link' => site_url($link_lv_eng)
-									],
-									[
-										'title' => 'DOC',
-										'permissioncheck' => $permissioncheck,
-										'link' => site_url($link_lv_eng . "&output=doc")
-									],
-									[
-										'title' => 'ODT',
-										'permissioncheck' => $permissioncheck,
-										'link' => site_url($link_lv_eng . "&output=odt")
-									]
-								]
-							]
-						]
-					]
-				]
-			],
-			[
-				'title' => '<i class="fas fa-archive" title="' . $this->p->t("stv", "document_archive") . '"></i>',
-				'children' => [
-					[
-						'title' => $title_ff,
-						'action' => [
-							'url' => site_url($archive_url),
-							'post' => $archive_post_ff,
-							'response' => $archive_response
-						]
-					],
-					[
-						'title' => $title_lv,
-						'children' => [
-							[
-								'title' => $title_ger,
-								'action' => [
-									'url' => site_url($archive_url),
-									'post' => $archive_post_lv_ger,
-									'response' => $archive_response
-								]
-							],
-							[
-								'title' => $title_eng,
-								'action' => [
-									'url' => site_url($archive_url),
-									'post' => $archive_post_lv_eng,
-									'response' => $archive_response
-								]
-							]
-						]
-					]
-				]
-			]
-		];
-
-		return $list;
-	}
-
 	/**
 	 * Sort tab list
 	 *
diff --git a/application/controllers/api/frontend/v1/stv/LvTermine.php b/application/controllers/api/frontend/v1/stv/LvTermine.php
index c29f56964..b9e23e77d 100644
--- a/application/controllers/api/frontend/v1/stv/LvTermine.php
+++ b/application/controllers/api/frontend/v1/stv/LvTermine.php
@@ -34,7 +34,7 @@ class LvTermine extends FHCAPI_Controller
 
 	//TODO Build own lib or combine with Controller Stundenplan.php
 	//here use of logic of Stundenplan.php, extended with parameters uid, grouping, and used dbTable
-	public function getStundenplan($uid, $start_date = null, $end_date = null, $groupConsecutiveHours = false, $dbStundenplanTable = "stundenplan")
+	public function getStundenplan($uid, $start_date = null, $end_date = null, $dbStundenplanTable = "stundenplan", $groupConsecutiveHours = false)
 	{
 		$student_uid = $uid;
 		$semester_range = $this->studienSemesterErmitteln($start_date, $end_date);
@@ -80,13 +80,6 @@ class LvTermine extends FHCAPI_Controller
 
 		$stundenplan_data = $this->getDataOrTerminateWithError($stundenplan_data) ?? [];
 		$this->terminateWithSuccess($stundenplan_data);
-
-		$this->expand_object_information($stundenplan_data);
-
-		$this->returnObj['$stundenplan_query'] = $stundenplan_query;
-		$this->returnObj['$student_lehrverband'] = $student_lehrverband;
-		$this->returnObj['$benutzer_gruppen'] = $benutzer_gruppen;
-		$this->terminateWithSuccess($stundenplan_data);
 	}
 
 	public function getStudiensemester()
diff --git a/application/helpers/hlp_document_helper.php b/application/helpers/hlp_document_helper.php
new file mode 100644
index 000000000..5b457fe82
--- /dev/null
+++ b/application/helpers/hlp_document_helper.php
@@ -0,0 +1,188 @@
+<?php
+
+if (!defined('BASEPATH')) exit('No direct script access allowed');
+
+/**
+ * Helper function to generate the default documentslist config for the
+ * grades tab.
+ *
+ * The resulting array consists of elements which are associative arrays
+ * that can have the following entries:
+ * title			(required) on the first level this can be HTML code.
+ * permissioncheck	(optional) an URL to an FHCAPI endpoint which returns
+ * 						true or false.
+ * link				(optional) an URL that will be called if "action" and
+ * 						"children" are not defined.
+ * action			(optional) an associative array that describes an
+ * 						POST action that will be called if "children" is
+ * 						not defined.
+ * 						It can have the following entries:
+ * - url			(required) an URL to an FHCAPI endpoint.
+ * - post			(optional) an associative array with the POST data to
+ * 						be sent.
+ * - response		(optional) a string that will be displayed on success.
+ * children			(optional) an array of child elements
+ *
+ * All strings that start with { and end with } in the URLs and the
+ * actions post parameter will be replaced with the corresponding
+ * attribute of the current dataset (e.G: {uid} will be replaced with the
+ * uid of the current dataset)
+ *
+ * @return array
+ */
+function gradesDocumentsList()
+{
+	$ci =& get_instance();
+	$ci->load->library('PhrasesLib', array('stv'), 'p');
+
+	$permissioncheck = site_url("api/frontend/v1/documents/permissionAlternativeFormat/{studiengang_kz}");
+
+	$title_ger = $ci->p->t("global", "deutsch");
+	$title_eng = $ci->p->t("global", "englisch");
+	$title_ff = $ci->p->t("stv", "document_certificate");
+	$title_lv = $ci->p->t("stv", "document_coursecertificate");
+
+	$link_ff = "documents/export/" .
+		"zertifikat.rdf.php/" .
+		"Zertifikat" .
+		"?stg_kz={studiengang_kz_lv}" .
+		"&uid={uid}" .
+		"&ss={studiensemester_kurzbz}" .
+		"&lvid={lehrveranstaltung_id}";
+	$link_lv_ger = "documents/export/" .
+		"lehrveranstaltungszeugnis.rdf.php/" .
+		"LVZeugnis" .
+		"?stg_kz={studiengang_kz}" .
+		"&uid={uid}" .
+		"&ss={studiensemester_kurzbz}" .
+		"&lvid={lehrveranstaltung_id}";
+	$link_lv_eng = "documents/export/" .
+		"lehrveranstaltungszeugnis.rdf.php/" .
+		"LVZeugnisEng" .
+		"?stg_kz={studiengang_kz}" .
+		"&uid={uid}" .
+		"&ss={studiensemester_kurzbz}" .
+		"&lvid={lehrveranstaltung_id}";
+
+	$archive_url = "api/frontend/v1/documents/archiveSigned";
+	$archive_response = $ci->p->t("stv", "document_signed_and_archived");
+	$archive_post_ff = [
+		"xml" => "zertifikat.rdf.php",
+		"xsl" => "Zertifikat",
+		"stg_kz" => "{studiengang_kz_lv}",
+		"uid" => "{uid}",
+		"ss" => "{studiensemester_kurzbz}",
+		"lvid" => "{lehrveranstaltung_id}"
+	];
+	$archive_post_lv_ger = [
+		"xml" => "lehrveranstaltungszeugnis.rdf.php",
+		"xsl" => "LVZeugnis",
+		"stg_kz" => "{studiengang_kz}",
+		"uid" => "{uid}",
+		"ss" => "{studiensemester_kurzbz}",
+		"lvid" => "{lehrveranstaltung_id}"
+	];
+	$archive_post_lv_eng = [
+		"xml" => "lehrveranstaltungszeugnis.rdf.php",
+		"xsl" => "LVZeugnisEng",
+		"stg_kz" => "{studiengang_kz}",
+		"uid" => "{uid}",
+		"ss" => "{studiensemester_kurzbz}",
+		"lvid" => "{lehrveranstaltung_id}"
+	];
+
+	$list = [
+		[
+			'title' => '<i class="fa fa-download" title="' . $ci->p->t("stv", "document_download") . '"></i>',
+			'children' => [
+				[
+					'title' => $title_ff,
+					'link' => site_url($link_ff)
+				],
+				[
+					'title' => $title_lv,
+					'children' => [
+						[
+							'title' => $title_ger,
+							'link' => site_url($link_lv_ger),
+							'children' => [
+								[
+									'title' => 'PDF',
+									'permissioncheck' => $permissioncheck,
+									'link' => site_url($link_lv_ger)
+								],
+								[
+									'title' => 'DOC',
+									'permissioncheck' => $permissioncheck,
+									'link' => site_url($link_lv_ger . "&output=doc")
+								],
+								[
+									'title' => 'ODT',
+									'permissioncheck' => $permissioncheck,
+									'link' => site_url($link_lv_ger . "&output=odt")
+								]
+							]
+						],
+						[
+							'title' => $title_eng,
+							'link' => site_url($link_lv_eng),
+							'children' => [
+								[
+									'title' => 'PDF',
+									'permissioncheck' => $permissioncheck,
+									'link' => site_url($link_lv_eng)
+								],
+								[
+									'title' => 'DOC',
+									'permissioncheck' => $permissioncheck,
+									'link' => site_url($link_lv_eng . "&output=doc")
+								],
+								[
+									'title' => 'ODT',
+									'permissioncheck' => $permissioncheck,
+									'link' => site_url($link_lv_eng . "&output=odt")
+								]
+							]
+						]
+					]
+				]
+			]
+		],
+		[
+			'title' => '<i class="fas fa-archive" title="' . $ci->p->t("stv", "document_archive") . '"></i>',
+			'children' => [
+				[
+					'title' => $title_ff,
+					'action' => [
+						'url' => site_url($archive_url),
+						'post' => $archive_post_ff,
+						'response' => $archive_response
+					]
+				],
+				[
+					'title' => $title_lv,
+					'children' => [
+						[
+							'title' => $title_ger,
+							'action' => [
+								'url' => site_url($archive_url),
+								'post' => $archive_post_lv_ger,
+								'response' => $archive_response
+							]
+						],
+						[
+							'title' => $title_eng,
+							'action' => [
+								'url' => site_url($archive_url),
+								'post' => $archive_post_lv_eng,
+								'response' => $archive_response
+							]
+						]
+					]
+				]
+			]
+		]
+	];
+
+	return $list;
+}
diff --git a/application/libraries/LektorLib.php b/application/libraries/LektorLib.php
index bbe630eaf..8a60e0aaa 100644
--- a/application/libraries/LektorLib.php
+++ b/application/libraries/LektorLib.php
@@ -17,7 +17,12 @@ class LektorLib
 		$this->_ci->load->model('organisation/Organisationseinheit_model', 'OrganisationseinheitModel');
 		$this->_ci->load->model('ressource/mitarbeiter_model', 'MitarbeiterModel');
 		$this->_ci->load->model('person/Benutzer_model', 'BenutzerModel');
+		$this->_ci->load->model('ressource/Zeitsperre_model', 'ZeitsperreModel');
+		$this->_ci->load->model('ressource/Reservierung_model', 'ReservierungModel');
+		$this->_ci->load->model('ressource/stundenplandev_model', 'StundenplandevModel');
+
 		$this->_ci->load->library('PhrasesLib', array('lehre'));
+		$this->_ci->load->library('VariableLib', ['uid' => getAuthUID()]);
 	}
 
 	public function addLektorToLehreinheit($lehreinheit_id, $mitarbeiter_uid)
@@ -78,10 +83,13 @@ class LektorLib
 
 	public function updateLektorFromLehreinheit($lehreinheit_id, $mitarbeiter_uid, $new_data)
 	{
+		$old_uid = $mitarbeiter_uid;
+		$new_uid = isset($new_data['mitarbeiter_uid']) ? $new_data['mitarbeiter_uid'] : $mitarbeiter_uid;
+
 		$this->_ci->LehreinheitmitarbeiterModel->addSelect('lehre.tbl_lehreinheitmitarbeiter.*, lehre.tbl_lehreinheit.studiensemester_kurzbz, tbl_lehrveranstaltung.studiengang_kz');
 		$this->_ci->LehreinheitmitarbeiterModel->addJoin('lehre.tbl_lehreinheit', 'lehreinheit_id');
 		$this->_ci->LehreinheitmitarbeiterModel->addJoin('lehre.tbl_lehrveranstaltung', 'lehrveranstaltung_id');
-		$lehreinheit_result = $this->_ci->LehreinheitmitarbeiterModel->loadWhere(array('lehreinheit_id' => $lehreinheit_id, 'mitarbeiter_uid' => $mitarbeiter_uid));
+		$lehreinheit_result = $this->_ci->LehreinheitmitarbeiterModel->loadWhere(array('lehreinheit_id' => $lehreinheit_id, 'mitarbeiter_uid' => $old_uid));
 
 		if (isError($lehreinheit_result)) return $lehreinheit_result;
 
@@ -89,27 +97,47 @@ class LektorLib
 
 		$lehreinheit = getData($lehreinheit_result)[0];
 
+		$semesterstunden_alt = $lehreinheit->semesterstunden;
+		$semesterstunden_neu = isset($new_data['semesterstunden']) ? $new_data['semesterstunden'] : $semesterstunden_alt;
+		$bismelden_neu = isset($new_data['bismelden']) ? $new_data['bismelden'] : $lehreinheit->bismelden;
+		$neue_stunden_eingerechnet = (bool)$bismelden_neu;
+		$alte_stunden_eingerechnet = (bool)$lehreinheit->bismelden;
+		$stundenplan_update = false;
 
-		//TODO kollision check, wird vorerst nicht implementiert -> nur über das FAS möglich
-		if (isset($new_data['mitarbeiter_uid']) && $new_data['mitarbeiter_uid'] !== $mitarbeiter_uid)
+		if ($old_uid !== $new_uid)
 		{
-			$this->_ci->load->model('ressource/stundenplandev_model', 'StundenplandevModel');
-			$this->_ci->StundenplandevModel->addGroupBy('stundenplandev_id');
-			$this->_ci->StundenplandevModel->addGroupBy('mitarbeiter_uid');
-			$this->_ci->StundenplandevModel->addGroupBy('mitarbeiter_uid');
-			$verplant = $this->_ci->StundenplandevModel->loadWhere(array('lehreinheit_id' => $lehreinheit_id, 'mitarbeiter_uid' => $mitarbeiter_uid));
-
-			if (hasData($verplant))
-				return error($this->_ci->phraseslib->t("lehre", "lektorbereitsverplant"));
-
-			$lehreinheit_data = $this->_ci->LehreinheitmitarbeiterModel->loadWhere(array('mitarbeiter_uid' => $new_data['mitarbeiter_uid'], 'lehreinheit_id' => $lehreinheit_id));
+			$lehreinheit_data = $this->_ci->LehreinheitmitarbeiterModel->loadWhere(array('mitarbeiter_uid' => $new_uid, 'lehreinheit_id' => $lehreinheit_id));
 
 			if (hasData($lehreinheit_data))
 				return error($this->_ci->phraseslib->t("lehre", "bereitzugeteilt"));
 
+			$this->_ci->StundenplandevModel->addGroupBy('stundenplandev_id');
+			$this->_ci->StundenplandevModel->addGroupBy('mitarbeiter_uid');
+			$verplant = $this->_ci->StundenplandevModel->loadWhere(array('lehreinheit_id' => $lehreinheit_id, 'mitarbeiter_uid' => $old_uid));
+
+			if (hasData($verplant))
+			{
+				$kollision = $this->hasKollision(getData($verplant), $new_uid);
+
+				$ignore_kollision = $this->_ci->variablelib->getVar('ignore_kollision');
+
+				if ($kollision === false || $ignore_kollision == 'true')
+				{
+					$stundenplan_update = true;
+				}
+				else if (is_array($kollision))
+				{
+					return error( "Änderung fehlgeschlagen! Die Änderung des Lektors führt zu ".count($kollision)." Kollision(en) im LV-Plan. Deaktivieren Sie die Kollisionspruefung oder wenden Sie sich an die LV-Planung!\n zB. $kollision[0]");
+				}
+				else
+				{
+					return error($kollision);
+				}
+			}
 		}
+
 		$warning = '';
-		if (isset($new_data['semesterstunden']))
+		if (($semesterstunden_neu !== '' && $semesterstunden_alt !== '') && (($semesterstunden_neu > $semesterstunden_alt) || $neue_stunden_eingerechnet))
 		{
 			$studiengang_result = $this->_ci->StudiengangModel->loadWhere(array('studiengang_kz' => $lehreinheit->studiengang_kz));
 			if (isError($studiengang_result)) return $studiengang_result;
@@ -120,7 +148,7 @@ class LektorLib
 			if (isError($studiensemester_result)) return $studiensemester_result;
 			$studiensemester = getData($studiensemester_result)[0];
 
-			$echter_dv_result = $this->_ci->DienstverhaeltnisModel->existsDienstverhaeltnis($mitarbeiter_uid, $studiensemester->start, $studiensemester->ende, 'echterdv');
+			$echter_dv_result = $this->_ci->DienstverhaeltnisModel->existsDienstverhaeltnis($new_uid, $studiensemester->start, $studiensemester->ende, 'echterdv');
 
 			$echter_dv = false;
 
@@ -129,83 +157,81 @@ class LektorLib
 				$echter_dv = true;
 			}
 
-			$neue_stunden_eingerechnet = isset($new_data['bismelden']) ? $new_data['bismelden'] : $lehreinheit->bismelden;
-			$alte_stunden_eingerechnet = $lehreinheit->bismelden;
+			$stundengrenze_result = $this->_ci->OrganisationseinheitModel->getStundengrenze($studiengang->oe_kurzbz, $echter_dv);
+			if (isError($stundengrenze_result)) return $stundengrenze_result;
 
-			if (($new_data['semesterstunden'] > $lehreinheit->semesterstunden) || $neue_stunden_eingerechnet)
+			$stundengrenze = getData($stundengrenze_result)[0];
+
+			$oe_result = $this->_ci->OrganisationseinheitModel->getChilds($stundengrenze->oe_kurzbz);
+			$oe_array = hasData($oe_result) ? array_column(getData($oe_result), 'oe_kurzbz') : array();
+
+			$semesterstunden_alt_sql = is_null($semesterstunden_alt) ? 0 : $semesterstunden_alt;
+			$semesterstunden_neu_sql = is_null($semesterstunden_neu) ? 0 : $semesterstunden_neu;
+
+			if ($alte_stunden_eingerechnet && $neue_stunden_eingerechnet)
+				$this->_ci->LehreinheitmitarbeiterModel->addSelect("(SUM(tbl_lehreinheitmitarbeiter.semesterstunden) - ($semesterstunden_alt_sql) + {$this->_ci->LehreinheitmitarbeiterModel->db->escape($semesterstunden_neu_sql)}) as summe");
+			else if ($alte_stunden_eingerechnet && !$neue_stunden_eingerechnet)
+				$this->_ci->LehreinheitmitarbeiterModel->addSelect("(SUM(tbl_lehreinheitmitarbeiter.semesterstunden) - ($semesterstunden_alt_sql)) as summe");
+			else if (!$alte_stunden_eingerechnet && $neue_stunden_eingerechnet)
+				$this->_ci->LehreinheitmitarbeiterModel->addSelect("(SUM(tbl_lehreinheitmitarbeiter.semesterstunden) + ({$this->_ci->LehreinheitmitarbeiterModel->db->escape($semesterstunden_neu_sql)})) as summe");
+			else if (!$alte_stunden_eingerechnet && !$neue_stunden_eingerechnet)
+				$this->_ci->LehreinheitmitarbeiterModel->addSelect("(SUM(tbl_lehreinheitmitarbeiter.semesterstunden)) as summe");
+
+			$this->_ci->LehreinheitmitarbeiterModel->addJoin('lehre.tbl_lehreinheit', 'lehreinheit_id');
+			$this->_ci->LehreinheitmitarbeiterModel->addJoin('lehre.tbl_lehrveranstaltung', 'lehrveranstaltung_id');
+			$this->_ci->LehreinheitmitarbeiterModel->addJoin('public.tbl_studiengang', 'studiengang_kz');
+
+			$this->_ci->LehreinheitmitarbeiterModel->db->where('mitarbeiter_uid', $new_uid);
+			$this->_ci->LehreinheitmitarbeiterModel->db->where('studiensemester_kurzbz', $lehreinheit->studiensemester_kurzbz);
+			$this->_ci->LehreinheitmitarbeiterModel->db->where('bismelden', true);
+			$this->_ci->LehreinheitmitarbeiterModel->db->where('lower(mitarbeiter_uid) NOT LIKE', '_dummy%');
+
+			if (count($oe_array) > 0)
 			{
-				$stundengrenze_result = $this->_ci->OrganisationseinheitModel->getStundengrenze($studiengang->oe_kurzbz, $echter_dv);
-				if (isError($stundengrenze_result)) return $stundengrenze_result;
-
-				$stundengrenze = getData($stundengrenze_result)[0];
-
-				$oe_result = $this->_ci->OrganisationseinheitModel->getChilds($stundengrenze->oe_kurzbz);
-				$oe_array = hasData($oe_result) ? array_column(getData($oe_result), 'oe_kurzbz') : array('');
-
-				if ($alte_stunden_eingerechnet && $neue_stunden_eingerechnet)
-					$this->_ci->LehreinheitmitarbeiterModel->addSelect("(SUM(tbl_lehreinheitmitarbeiter.semesterstunden) - ($lehreinheit->semesterstunden) + {$this->_ci->LehreinheitmitarbeiterModel->db->escape($new_data['semesterstunden'])}) as summe");
-				else if ($alte_stunden_eingerechnet && !$neue_stunden_eingerechnet)
-					$this->_ci->LehreinheitmitarbeiterModel->addSelect("(SUM(tbl_lehreinheitmitarbeiter.semesterstunden) - ($lehreinheit->semesterstunden)) as summe");
-				else if (!$alte_stunden_eingerechnet && $neue_stunden_eingerechnet)
-					$this->_ci->LehreinheitmitarbeiterModel->addSelect("(SUM(tbl_lehreinheitmitarbeiter.semesterstunden) + ({$this->_ci->LehreinheitmitarbeiterModel->db->escape($new_data['semesterstunden'])})) as summe");
-				else if (!$alte_stunden_eingerechnet && !$neue_stunden_eingerechnet)
-					$this->_ci->LehreinheitmitarbeiterModel->addSelect("(SUM(tbl_lehreinheitmitarbeiter.semesterstunden)) as summe");
-
-				$this->_ci->LehreinheitmitarbeiterModel->addJoin('lehre.tbl_lehreinheit', 'lehreinheit_id');
-				$this->_ci->LehreinheitmitarbeiterModel->addJoin('lehre.tbl_lehrveranstaltung', 'lehrveranstaltung_id');
-				$this->_ci->LehreinheitmitarbeiterModel->addJoin('public.tbl_studiengang', 'studiengang_kz');
-
-				$this->_ci->LehreinheitmitarbeiterModel->db->where('mitarbeiter_uid', (isset($new_data['mitarbeiter_uid']) ? $new_data['mitarbeiter_uid'] : $mitarbeiter_uid));
-				$this->_ci->LehreinheitmitarbeiterModel->db->where('studiensemester_kurzbz', $lehreinheit->studiensemester_kurzbz);
-				$this->_ci->LehreinheitmitarbeiterModel->db->where('bismelden', true);
-				$this->_ci->LehreinheitmitarbeiterModel->db->where('lower(mitarbeiter_uid) NOT LIKE', '_dummy%');
-
 				$this->_ci->LehreinheitmitarbeiterModel->db->where_in('tbl_studiengang.oe_kurzbz', $oe_array);
+			}
 
+			if(defined('FAS_LV_LEKTORINNENZUTEILUNG_STUNDEN_IGNORE_OE')
+				&& is_array(FAS_LV_LEKTORINNENZUTEILUNG_STUNDEN_IGNORE_OE)
+				&& count(FAS_LV_LEKTORINNENZUTEILUNG_STUNDEN_IGNORE_OE) > 0)
+			{
+				$this->_ci->LehreinheitmitarbeiterModel->db->where_not_in('tbl_studiengang.oe_kurzbz', FAS_LV_LEKTORINNENZUTEILUNG_STUNDEN_IGNORE_OE);
+			}
 
-				if(defined('FAS_LV_LEKTORINNENZUTEILUNG_STUNDEN_IGNORE_OE')
-					&& is_array(FAS_LV_LEKTORINNENZUTEILUNG_STUNDEN_IGNORE_OE)
-					&& count(FAS_LV_LEKTORINNENZUTEILUNG_STUNDEN_IGNORE_OE) > 0)
+			$summe_result = $this->_ci->LehreinheitmitarbeiterModel->load();
+
+			if (isError($summe_result)) return $summe_result;
+
+			if (!hasData($summe_result)) return error('Fehler beim Ermitteln der Gesamtstunden');
+
+			$summe = getData($summe_result)[0]->summe;
+
+			if ($summe > $stundengrenze->stunden)
+			{
+				if (!$echter_dv && (!$this->_ci->permissionlib->isBerechtigt('admin')))
 				{
-					$this->_ci->LehreinheitmitarbeiterModel->db->where_not_in('tbl_studiengang.oe_kurzbz', FAS_LV_LEKTORINNENZUTEILUNG_STUNDEN_IGNORE_OE);
+					if (!$this->LehrauftragAufFirma($new_uid))
+						return error("ACHTUNG: Die maximal erlaubte Semesterstundenanzahl des Lektors von $summe Stunden ($stundengrenze->stunden) wurde ueberschritten!\nDaten wurden NICHT gespeichert!\n\n");
+				}
+				else
+				{
+					$warning .= "ACHTUNG: Die maximal erlaubte Semesterstundenanzahl des Lektors von $summe Stunden ($stundengrenze->stunden) wurde ueberschritten!\nDaten wurden gespeichert!\n\n";
 				}
 
-				$summe_result = $this->_ci->LehreinheitmitarbeiterModel->load();
+				$stunden_limit_result = $this->getStundenInstitut($new_uid, $lehreinheit->studiensemester_kurzbz, $oe_array);
 
-				if (isError($summe_result)) return $summe_result;
-
-				if (!hasData($summe_result)) return error('Fehler beim Ermitteln der Gesamtstunden');
-
-				$summe = getData($summe_result)[0]->summe;
-
-				if ($summe > $stundengrenze->stunden)
+				if (hasData($stunden_limit_result))
 				{
-
-					if (!$echter_dv && (!$this->_ci->permissionlib->isBerechtigt('admin')))
+					$stunden_limit_array = getData($stunden_limit_result);
+					foreach ($stunden_limit_array as $stunden_limit)
 					{
-						if (!$this->LehrauftragAufFirma(isset($formData['mitarbeiter_uid']) ? $formData['mitarbeiter_uid'] : $mitarbeiter_uid))
-							return error("ACHTUNG: Die maximal erlaubte Semesterstundenanzahl des Lektors von $summe Stunden ($stundengrenze->stunden) wurde ueberschritten!\nDaten wurden NICHT gespeichert!\n\n");
-					}
-					else
-					{
-						$warning .= "ACHTUNG: Die maximal erlaubte Semesterstundenanzahl des Lektors von $summe Stunden ($stundengrenze->stunden) wurde ueberschritten!\nDaten wurden gespeichert!\n\n";
-					}
-
-					$stunden_limit_result = $this->getStundenInstitut($mitarbeiter_uid, $lehreinheit->studiensemester_kurzbz, $oe_array);
-
-					if (hasData($stunden_limit_result))
-					{
-						$stunden_limit_array = getData($stunden_limit_result);
-						foreach ($stunden_limit_array as $stunden_limit)
-						{
-							$warning .= $stunden_limit->summe . ' Stunden ' . $stunden_limit->bezeichnung . "\n";
-						}
+						$warning .= $stunden_limit->summe . ' Stunden ' . $stunden_limit->bezeichnung . "\n";
 					}
 				}
 			}
 		}
 
-		$benutzer_result = $this->_ci->BenutzerModel->load(array(isset($formData['mitarbeiter_uid']) ? $formData['mitarbeiter_uid'] : $mitarbeiter_uid));
+		$benutzer_result = $this->_ci->BenutzerModel->load(array($new_uid));
 
 		if (isError($benutzer_result)) return $benutzer_result;
 
@@ -227,12 +253,23 @@ class LektorLib
 			'bismelden'
 		);
 
+		$nullable_fields = array('stundensatz', 'semesterstunden', 'planstunden');
+
 		$updateData = array();
 		foreach ($updatableFields as $field)
 		{
-			$value = isset($new_data[$field]) ? $new_data[$field] : null;
+			if (!array_key_exists($field, $new_data))
+			{
+				continue;
+			}
 
-			if ($value !== null)
+			$value = $new_data[$field];
+
+			if (in_array($field, $nullable_fields))
+			{
+				$updateData[$field] = $value;
+			}
+			elseif ($value !== null)
 			{
 				$updateData[$field] = $value;
 			}
@@ -240,10 +277,24 @@ class LektorLib
 		$updateData['updatevon'] = getAuthUID();
 		$updateData['updateamum'] = date('Y-m-d H:i:s');
 
-		$result = $this->_ci->LehreinheitmitarbeiterModel->update(array('lehreinheit_id' => $lehreinheit_id, 'mitarbeiter_uid' => $mitarbeiter_uid), $updateData);
+		$result = $this->_ci->LehreinheitmitarbeiterModel->update(array('lehreinheit_id' => $lehreinheit_id, 'mitarbeiter_uid' => $old_uid), $updateData);
 
 		if (isError($result)) return $result;
 
+		if ($stundenplan_update)
+		{
+			$update_result = $this->_ci->StundenplandevModel->update([
+				'lehreinheit_id' => $lehreinheit_id,
+				'mitarbeiter_uid' => $old_uid,
+			], [
+				'mitarbeiter_uid' => $new_uid,
+				'updateamum' => date('Y-m-d H:i:s'),
+				'updatevon' => getAuthUID()
+			]);
+
+			if (isError($update_result)) return $update_result;
+		}
+
 		if ($warning !== '') return success(['warning' => $warning]);
 
 		return success('Erfolgreich geupdated');
@@ -347,4 +398,52 @@ class LektorLib
 		$this->_ci->LehreinheitmitarbeiterModel->addGroupBy('tbl_studiengang.bezeichnung');
 		return $this->_ci->LehreinheitmitarbeiterModel->load();
 	}
+
+	private function hasKollision($stunden, $mitarbeiter)
+	{
+		$kollision = array();
+
+		$ignore_zeitsperre = $this->_ci->variablelib->getVar('ignore_zeitsperre');
+		$ignore_reservierung = $this->_ci->variablelib->getVar('ignore_reservierung');
+
+		foreach ($stunden as $stunde)
+		{
+			$stundenplan_result = $this->_ci->StundenplandevModel->lektorHasStundenplandevEintrag($mitarbeiter, $stunde->datum, $stunde->stunde);
+
+			if (isError($stundenplan_result))
+				return $stundenplan_result;
+
+			if (hasData($stundenplan_result))
+			{
+				$stundenplan_result = getData($stundenplan_result)[0];
+				$kollision[] = "Kollision stundenplandev: $stundenplan_result->stundenplandev_id|$stundenplan_result->lektor|$stundenplan_result->ort_kurzbz|$stundenplan_result->stg_kurzbz-$stundenplan_result->semester$stundenplan_result->verband$stundenplan_result->gruppe$stundenplan_result->gruppe_kurzbz - $stundenplan_result->datum/$stundenplan_result->stunde";
+			}
+			else
+			{
+				if ($ignore_zeitsperre == 'false' && (!defined('KOLLISIONSFREIE_USER') || !in_array($mitarbeiter, unserialize(KOLLISIONSFREIE_USER))))
+				{
+					$zeitsperre_result = $this->_ci->ZeitsperreModel->checkIfZeitsperreExists($mitarbeiter, $stunde->datum, $stunde->stunde);
+
+					if (hasData($zeitsperre_result))
+					{
+						$zeitsperre_result = getData($zeitsperre_result)[0];
+						$kollision[] = "Kollision (Zeitsperre): $zeitsperre_result->zeitsperre_id|$zeitsperre_result->mitarbeiter_uid|$zeitsperre_result->zeitsperretyp_kurzbz - $zeitsperre_result->vondatum/$zeitsperre_result->vonstunde|$zeitsperre_result->bisdatum/$zeitsperre_result->bisstunde";
+					}
+				}
+
+				if ($ignore_reservierung == 'false' && (!defined('KOLLISIONSFREIE_USER') || !in_array($mitarbeiter, unserialize(KOLLISIONSFREIE_USER))))
+				{
+					$reservierung_result = $this->_ci->ReservierungModel->lektorHasReservierung($mitarbeiter, $stunde->datum, $stunde->stunde);
+
+					if (hasData($reservierung_result))
+					{
+						$reservierung_result = getData($reservierung_result)[0];
+						$kollision[] = "Kollision (Reservierung): $reservierung_result->reservierung_id|$reservierung_result->uid|$reservierung_result->ort_kurzbz|$reservierung_result->stg_kurzbz-$reservierung_result->semester$reservierung_result->verband$reservierung_result->gruppe$reservierung_result->gruppe_kurzbz - $reservierung_result->datum/$reservierung_result->stunde";
+					}
+				}
+			}
+		}
+
+		return isEmptyArray($kollision) ? false : $kollision;
+	}
 }
diff --git a/application/libraries/StundenplanLib.php b/application/libraries/StundenplanLib.php
index a7bec61ec..0085a6b82 100644
--- a/application/libraries/StundenplanLib.php
+++ b/application/libraries/StundenplanLib.php
@@ -184,6 +184,21 @@ class StundenplanLib
 		return success($stundenplan_data);
 	}
 
+	public function getEventsByLE($lehreinheit_id, $start, $end, $stundenplan)
+	{
+		$this->_ci =& get_instance();
+
+		$this->_ci->load->model('ressource/Stundenplan_model', 'StundenplanModel');
+		return $this->_ci->StundenplanModel->getStundenplanLE($lehreinheit_id, $start, $end, $stundenplan);
+	}
+
+	public function getEventsByLV($lehrveranstaltung_id, $start, $end, $stundenplan)
+	{
+		$this->_ci =& get_instance();
+
+		$this->_ci->load->model('ressource/Stundenplan_model', 'StundenplanModel');
+		return $this->_ci->StundenplanModel->getStundenplanLV($lehrveranstaltung_id, $start, $end, $stundenplan);
+	}
 	/**
 	 * Get stundenplan for a room
 	 *
diff --git a/application/models/education/Lehreinheitgruppe_model.php b/application/models/education/Lehreinheitgruppe_model.php
index dee8bbfe1..139d639cb 100644
--- a/application/models/education/Lehreinheitgruppe_model.php
+++ b/application/models/education/Lehreinheitgruppe_model.php
@@ -341,7 +341,7 @@ class Lehreinheitgruppe_model extends DB_Model
 		$this->db->where('lehreinheit_id', $lehreinheit_id);
 		$this->db->where('studiengang_kz', $gruppen_array->studiengang_kz);
 
-		if (!isEmptyString($gruppen_array->semester))
+		if (!isEmptyString((string)$gruppen_array->semester))
 		{
 			$this->db->where('semester', $gruppen_array->semester);
 		}
@@ -444,30 +444,37 @@ class Lehreinheitgruppe_model extends DB_Model
 										) 
 									ELSE tbl_gruppe.beschreibung
 								END AS beschreibung");
-		$this->addSelect("CASE 
-									WHEN tbl_lehreinheitgruppe.gruppe_kurzbz IS NULL THEN 
-										(
-											SELECT EXISTS (
-												SELECT 1 
-												FROM lehre.tbl_stundenplandev
-												WHERE lehreinheit_id = tbl_lehreinheitgruppe.lehreinheit_id
-													AND studiengang_kz = tbl_lehreinheitgruppe.studiengang_kz
-													AND semester = tbl_lehreinheitgruppe.semester
-													AND TRIM(COALESCE(verband, '')) = TRIM(tbl_lehreinheitgruppe.verband)
-													AND TRIM(COALESCE(gruppe, '')) = TRIM(tbl_lehreinheitgruppe.gruppe)
-													AND (gruppe_kurzbz IS NULL OR gruppe_kurzbz = '')
-											)
-										)
-									ELSE 
+		$this->addSelect("
+									CASE
+										WHEN trim(COALESCE(tbl_lehreinheitgruppe.gruppe_kurzbz, '')) = '' THEN
 										(
 											SELECT EXISTS (
 												SELECT 1
-												FROM lehre.tbl_stundenplandev
-												WHERE lehreinheit_id = tbl_lehreinheitgruppe.lehreinheit_id
-													AND gruppe_kurzbz = tbl_lehreinheitgruppe.gruppe_kurzbz
+												FROM lehre.tbl_stundenplandev sp
+												WHERE sp.lehreinheit_id = tbl_lehreinheitgruppe.lehreinheit_id
+													AND sp.studiengang_kz = tbl_lehreinheitgruppe.studiengang_kz
+													AND sp.semester = tbl_lehreinheitgruppe.semester
+													AND trim(COALESCE(sp.verband, '')) = trim(COALESCE(tbl_lehreinheitgruppe.verband, ''))
+													AND trim(COALESCE(sp.gruppe, ''))  = trim(COALESCE(tbl_lehreinheitgruppe.gruppe, ''))
+													AND trim(COALESCE(sp.gruppe_kurzbz, '')) = ''
 											)
 										)
-								END AS verplant");
+									ELSE
+										(
+											SELECT EXISTS (
+												SELECT 1
+												FROM lehre.tbl_stundenplandev sp
+												WHERE sp.lehreinheit_id = tbl_lehreinheitgruppe.lehreinheit_id
+													AND sp.studiengang_kz = tbl_lehreinheitgruppe.studiengang_kz
+													AND sp.semester = tbl_lehreinheitgruppe.semester
+													AND trim(COALESCE(sp.verband, '')) = trim(COALESCE(tbl_lehreinheitgruppe.verband, ''))
+													AND trim(COALESCE(sp.gruppe, ''))  = trim(COALESCE(tbl_lehreinheitgruppe.gruppe, ''))
+													AND trim(COALESCE(sp.gruppe_kurzbz, '')) = trim(COALESCE(tbl_lehreinheitgruppe.gruppe_kurzbz, ''))
+											)
+										)
+										END AS verplant
+									");
+
 		$this->addJoin('tbl_studiengang', 'studiengang_kz', 'LEFT');
 		$this->addJoin('public.tbl_gruppe', 'gruppe_kurzbz', 'LEFT');
 
diff --git a/application/models/education/Lehrveranstaltung_model.php b/application/models/education/Lehrveranstaltung_model.php
index 5422c290e..bea676b98 100644
--- a/application/models/education/Lehrveranstaltung_model.php
+++ b/application/models/education/Lehrveranstaltung_model.php
@@ -1245,7 +1245,7 @@ class Lehrveranstaltung_model extends DB_Model
 	{
 		return "
 		SELECT
-				lehrveranstaltung_id, tbl_lehrveranstaltung.kurzbz as lv_kurzbz, tbl_lehrveranstaltung.bezeichnung as lv_bezeichnung, bezeichnung_english as lv_bezeichnung_english, studiengang_kz,
+				distinct on (lehrveranstaltung_id) lehrveranstaltung_id, tbl_lehrveranstaltung.kurzbz as lv_kurzbz, tbl_lehrveranstaltung.bezeichnung as lv_bezeichnung, bezeichnung_english as lv_bezeichnung_english, studiengang_kz,
 				tbl_studienplan_lehrveranstaltung.semester, tbl_lehrveranstaltung.sprache,
 				ects as lv_ects, semesterstunden, anmerkung, lehre, lehreverzeichnis as lv_lehreverzeichnis, tbl_lehrveranstaltung.aktiv,
 				planfaktor as lv_planfaktor, planlektoren as lv_planlektoren, planpersonalkosten as lv_planpersonalkosten,
diff --git a/application/models/education/Lvgesamtnote_model.php b/application/models/education/Lvgesamtnote_model.php
index c30045ff0..0a7638869 100644
--- a/application/models/education/Lvgesamtnote_model.php
+++ b/application/models/education/Lvgesamtnote_model.php
@@ -29,10 +29,14 @@ class Lvgesamtnote_model extends DB_Model
 		$this->addSelect("lv.bezeichnung AS lehrveranstaltung_bezeichnung");
 		$this->addSelect("lv.studiengang_kz");
 		$this->addSelect("UPPER(stg.typ || stg.kurzbz) AS studiengang");
+		$this->addSelect("person.vorname");
+		$this->addSelect("person.nachname");
 
 		$this->addJoin("lehre.tbl_note n", "note");
 		$this->addJoin("lehre.tbl_lehrveranstaltung lv", "lehrveranstaltung_id");
 		$this->addJoin("public.tbl_studiengang stg", "studiengang_kz");
+		$this->addJoin("public.tbl_benutzer benutzer", "uid = student_uid", "LEFT");
+		$this->addJoin("public.tbl_person person", "person_id", "LEFT");
 
 		$this->db->where($this->dbTable . ".freigabedatum <", "NOW()", false);
 
diff --git a/application/models/education/Zeugnisnote_model.php b/application/models/education/Zeugnisnote_model.php
index f32713dec..694c5d5c0 100644
--- a/application/models/education/Zeugnisnote_model.php
+++ b/application/models/education/Zeugnisnote_model.php
@@ -148,7 +148,7 @@ class Zeugnisnote_model extends DB_Model
 	 *
 	 * @return object
 	 */
-	public function getZeugnisnoten($student_uid, $studiensemester_kurzbz)
+	public function getZeugnisnoten($student_uid, $studiensemester_kurzbz, $lehrveranstaltung_id = null)
 	{
 		$params = array();
 		$where='';
@@ -163,6 +163,11 @@ class Zeugnisnote_model extends DB_Model
 			$where.=" AND vw_student_lehrveranstaltung.studiensemester_kurzbz= ?";
 			$params[] = $studiensemester_kurzbz;
 		}
+		if($lehrveranstaltung_id != null)
+		{
+			$where .= " AND vw_student_lehrveranstaltung.lehrveranstaltung_id = ?";
+			$params[] = $lehrveranstaltung_id;
+		}
 
 		$where2='';
 
@@ -176,6 +181,11 @@ class Zeugnisnote_model extends DB_Model
 			$where2 .= " AND studiensemester_kurzbz= ?";
 			$params[] = $studiensemester_kurzbz;
 		}
+		if($lehrveranstaltung_id != null)
+		{
+			$where2 .=" AND lehrveranstaltung_id = ?";
+			$params[] = $lehrveranstaltung_id;
+		}
 
 		$qry = "SELECT
 			a.*,
@@ -188,7 +198,10 @@ class Zeugnisnote_model extends DB_Model
 			lv.semester AS semester_lv,
 			lv.ects AS ects_lv,
 			lv.zeugnis,
-			lv.bezeichnung_english AS lehrveranstaltung_bezeichnung_english
+			lv.bezeichnung_english AS lehrveranstaltung_bezeichnung_english,
+			s.verband,
+			person.vorname,
+			person.nachname
 		FROM (
 			SELECT vw_student_lehrveranstaltung.lehrveranstaltung_id, uid,
 				   vw_student_lehrveranstaltung.studiensemester_kurzbz, note, punkte, uebernahmedatum, benotungsdatum,
@@ -231,6 +244,8 @@ class Zeugnisnote_model extends DB_Model
 			ORDER BY sort
 		) a
 		LEFT JOIN public.tbl_student s ON (a.uid = s.student_uid)
+		LEFT JOIN public.tbl_benutzer benutzer ON benutzer.uid = s.student_uid
+		LEFT JOIN public.tbl_person person ON benutzer.person_id = person.person_id
 		LEFT JOIN public.tbl_studiengang stg1 ON (s.studiengang_kz = stg1.studiengang_kz)
 		LEFT JOIN lehre.tbl_lehrveranstaltung lv USING (lehrveranstaltung_id)
 		LEFT JOIN public.tbl_studiengang stg2 ON (lv.studiengang_kz = stg2.studiengang_kz)";
diff --git a/application/models/ressource/Reservierung_model.php b/application/models/ressource/Reservierung_model.php
index cf5f1e4f9..d96fe2f6f 100644
--- a/application/models/ressource/Reservierung_model.php
+++ b/application/models/ressource/Reservierung_model.php
@@ -135,4 +135,15 @@ class Reservierung_model extends DB_Model
 		return $this->execQuery($query, [$uid, $uid]);
 	}
 
+	public function lektorHasReservierung($uid, $datum, $stunde)
+	{
+		$qry = "SELECT reservierung_id, uid, stg_kurzbz, ort_kurzbz, semester, verband, gruppe, gruppe_kurzbz, datum, stunde
+				FROM lehre.vw_reservierung
+				WHERE uid = ?
+					AND datum = ?
+					AND stunde = ?";
+
+		return $this->execReadOnlyQuery($qry, [$uid, $datum, $stunde]);
+	}
+
 }
diff --git a/application/models/ressource/Stundenplan_model.php b/application/models/ressource/Stundenplan_model.php
index 997451243..1eddd2e2f 100644
--- a/application/models/ressource/Stundenplan_model.php
+++ b/application/models/ressource/Stundenplan_model.php
@@ -333,6 +333,68 @@ class Stundenplan_model extends DB_Model
 		", [$start_date, $end_date, $lv_id]);
 	}
 
+	public function getStundenplanLE($lehreinheit, $start_date, $end_date, $stundenplan)
+	{
+		$qry = "
+			WITH lehreinheiten AS (
+				SELECT lehreinheit_id FROM lehre.tbl_lehreinheit WHERE lehreinheit_id = ?
+			), " . $this->getStundenplanCTE($stundenplan) . "
+			SELECT *
+			FROM stundenplanentries
+		";
+
+		return $this->execReadOnlyQuery($qry, array($lehreinheit, $start_date, $end_date));
+	}
+
+	public function getStundenplanLV($lehrveranstaltung_id, $start_date, $end_date, $stundenplan)
+	{
+		$qry = "
+			WITH lehreinheiten AS (
+				SELECT lehreinheit_id 
+				FROM lehre.tbl_lehreinheit 
+					JOIN tbl_studiensemester USING(studiensemester_kurzbz)
+				WHERE lehrveranstaltung_id = ?
+					AND tbl_studiensemester.start >= ? AND tbl_studiensemester.ende <= ?
+			), " . $this->getStundenplanCTE($stundenplan) . "
+			SELECT *
+			FROM stundenplanentries
+		";
+
+		return $this->execReadOnlyQuery($qry, array($lehrveranstaltung_id, $start_date, $end_date, $start_date, $end_date));
+	}
+
+	private function getStundenplanCTE($stundenplan)
+	{
+		return "entries AS (
+					SELECT
+						datum, min(stunde) as stunde_beginn, max(stunde) as stunde_ende,
+						array_agg(DISTINCT(
+								CASE WHEN gruppe_kurzbz is not null THEN gruppe_kurzbz
+										ELSE (UPPER(stg_typ || stg_kurzbz) || COALESCE(semester,'0') || COALESCE(verband,'') || COALESCE(gruppe,''))
+								END)) as gruppen_kuerzel,
+						array_agg(DISTINCT CONCAT(vorname || ' ' || nachname)) as lektorname,
+						array_agg(DISTINCT stundenplan.ort_kurzbz) as ort_kurzbz,
+						array_agg(DISTINCT titel) as titel,
+						lehrfach_bez, stundenplan.lehreinheit_id, lehrveranstaltung_id
+					FROM lehre.vw_$stundenplan as stundenplan
+						JOIN public.tbl_mitarbeiter ON stundenplan.uid = tbl_mitarbeiter.mitarbeiter_uid
+						JOIN tbl_benutzer ON tbl_mitarbeiter.mitarbeiter_uid = tbl_benutzer.uid
+						JOIN tbl_person USING(person_id)
+						JOIN lehreinheiten ON stundenplan.lehreinheit_id = lehreinheiten.lehreinheit_id
+					WHERE datum >= ? AND datum <= ?
+					GROUP BY datum, unr, stundenplan.lehreinheit_id, lehrveranstaltung_id, lehrfach_bez, lehrfach_bez
+					ORDER BY datum, min(stunde), unr, lehreinheit_id
+				),
+				stundenplanentries AS (
+					SELECT
+						entries.*,
+						stundeb.beginn AS beginn,
+						stundee.ende AS ende
+					FROM entries
+						JOIN lehre.tbl_stunde stundeb ON stundeb.stunde = entries.stunde_beginn
+						JOIN lehre.tbl_stunde stundee ON stundee.stunde = entries.stunde_ende
+				)";
+	}
 	/**
 	 * queries Stundenplan and filters by assigned ma_kurzbz, very similar to get by LVA
 	 *
diff --git a/application/models/ressource/Stundenplandev_model.php b/application/models/ressource/Stundenplandev_model.php
index e718ba073..355283b90 100644
--- a/application/models/ressource/Stundenplandev_model.php
+++ b/application/models/ressource/Stundenplandev_model.php
@@ -241,4 +241,15 @@ class Stundenplandev_model extends DB_Model
 
 		return $this->delete(array('lehreinheit_id' => $lehreinheit_id, 'mitarbeiter_uid' => $mitarbeiter_uid));
 	}
+
+	public function lektorHasStundenplandevEintrag($uid, $datum, $stunde)
+	{
+		$qry = "SELECT stundenplandev_id, lektor, stg_kurzbz, ort_kurzbz, semester, verband, gruppe, gruppe_kurzbz, datum, stunde 
+				FROM lehre.vw_stundenplandev
+				WHERE uid = ?
+					AND datum = ?
+					AND stunde = ?";
+
+		return $this->execReadOnlyQuery($qry, [$uid, $datum, $stunde]);
+	}
 }
diff --git a/application/models/ressource/Zeitsperre_model.php b/application/models/ressource/Zeitsperre_model.php
index 078d29d8b..50ba4cb1d 100644
--- a/application/models/ressource/Zeitsperre_model.php
+++ b/application/models/ressource/Zeitsperre_model.php
@@ -61,4 +61,40 @@ class Zeitsperre_model extends DB_Model
 
         return $this->execQuery($qry);
     }
+
+	public function checkIfZeitsperreExists($uid, $datum, $stunde)
+	{
+		$this->db->select("*");
+
+		$this->db->where('mitarbeiter_uid', $uid);
+		$this->db->where('zeitsperretyp_kurzbz !=', 'ZVerfueg');
+
+		$this->db->group_start();
+
+			$this->db->where('vondatum <', $datum);
+			$this->db->or_group_start();
+				$this->db->where('vondatum', $datum);
+				$this->db->group_start();
+					$this->db->where('vonstunde <=', $stunde);
+					$this->db->or_where('vonstunde IS NULL', null, false);
+				$this->db->group_end();
+			$this->db->group_end();
+		$this->db->group_end();
+
+
+		$this->db->group_start();
+			$this->db->where('bisdatum >', $datum);
+			$this->db->or_group_start();
+				$this->db->where('bisdatum', $datum);
+				$this->db->group_start();
+					$this->db->where('bisstunde >=', $stunde);
+					$this->db->or_where('bisstunde IS NULL', null, false);
+				$this->db->group_end();
+
+			$this->db->group_end();
+		$this->db->group_end();
+
+		return $this->load();
+
+	}
 }
diff --git a/application/views/LVVerwaltung.php b/application/views/LVVerwaltung.php
index 4cebae839..42d4631f1 100644
--- a/application/views/LVVerwaltung.php
+++ b/application/views/LVVerwaltung.php
@@ -31,6 +31,8 @@
 		lv-root="<?= site_url('LVVerwaltung'); ?>"
 		:permissions="<?= htmlspecialchars(json_encode($permissions));?>"
 		:config="<?=  htmlspecialchars(json_encode($configs)); ?>"
+		avatar-url="<?= site_url('Cis/Pub/bild/person/' . getAuthPersonId()); ?>"
+		logout-url="<?= site_url('Cis/Auth/logout'); ?>"
 	>
 	</router-view>
 
diff --git a/content/statistik/lehrauftragsliste_gst.xls.php b/content/statistik/lehrauftragsliste_gst.xls.php
index 990216c09..d44c91e63 100644
--- a/content/statistik/lehrauftragsliste_gst.xls.php
+++ b/content/statistik/lehrauftragsliste_gst.xls.php
@@ -41,6 +41,12 @@ else
 $user = get_uid();
 loadVariables($user);
 
+if (isset($_GET['studiensemester_kurzbz']))
+{
+	if (check_stsem($_GET['studiensemester_kurzbz']))
+		$semester_aktuell = $_GET['studiensemester_kurzbz'];
+}
+
 //Studiengang laden
 $studiengang = new studiengang($studiengang_kz);
 
diff --git a/content/statistik/lvplanung.php b/content/statistik/lvplanung.php
index b0169dade..fe69e4160 100644
--- a/content/statistik/lvplanung.php
+++ b/content/statistik/lvplanung.php
@@ -50,6 +50,12 @@ else
 $user = get_uid();
 loadVariables($user);
 
+if (isset($_GET['studiensemester_kurzbz']))
+{
+	if (check_stsem($_GET['studiensemester_kurzbz']))
+		$semester_aktuell = $_GET['studiensemester_kurzbz'];
+}
+
 $rechte = new benutzerberechtigung();
 $rechte->getBerechtigungen($user);
 
diff --git a/public/css/Lvverwaltung.css b/public/css/Lvverwaltung.css
index 6e0f4c760..b8152d39a 100644
--- a/public/css/Lvverwaltung.css
+++ b/public/css/Lvverwaltung.css
@@ -38,3 +38,9 @@ textarea[name="anmerkung"] {
 {
 	border-color: black;
 }
+
+.node-verband {
+	user-select: none;
+	-webkit-user-select: none;
+	-moz-user-select: none;
+}
diff --git a/public/js/api/factory/stv/coursedates.js b/public/js/api/factory/stv/coursedates.js
index 71ded7285..dc047f815 100644
--- a/public/js/api/factory/stv/coursedates.js
+++ b/public/js/api/factory/stv/coursedates.js
@@ -16,16 +16,20 @@
  */
 
 export default {
-	getCourselist(params) {
+	getCourselist(student_uid,  start_date, end_date, stundenplan) {
 		return {
 			method: 'get',
-			url: 'api/frontend/v1/stv/LvTermine/getStundenplan/' + params.student_uid + '/'
-				+ params.start_date + '/'
-				+ params.end_date + '/'
-				+ params.group_consecutiveHours + '/'
-				+ params.dbStundenplanTable
+			url: 'api/frontend/v1/stv/LvTermine/getStundenplan/' + encodeURIComponent(student_uid) + '/'
+				+ encodeURIComponent(start_date) + '/'
+				+ encodeURIComponent(end_date) + '/'
+				+ encodeURIComponent(stundenplan) + '/'
+				+ encodeURIComponent(true)
 		};
 	},
+	exportCalendar(student_uid, stundenplan)
+	{
+		return FHC_JS_DATA_STORAGE_OBJECT.app_root +  'content/statistik/termine.xls.php?student_uid=' + encodeURIComponent(student_uid) + '&db_stpl_table='+encodeURIComponent(stundenplan);
+	},
 	getStudiensemester(){
 		return {
 			method: 'get',
diff --git a/public/js/api/lehrveranstaltung/config.js b/public/js/api/lehrveranstaltung/config.js
new file mode 100644
index 000000000..40d275145
--- /dev/null
+++ b/public/js/api/lehrveranstaltung/config.js
@@ -0,0 +1,15 @@
+export default {
+	get() {
+		return {
+			method: 'get',
+			url: '/api/frontend/v1/lv/config/get'
+		};
+	},
+	set(params) {
+		return {
+			method: 'post',
+			url: 'api/frontend/v1/lv/config/set',
+			params
+		};
+	}
+};
diff --git a/public/js/api/lehrveranstaltung/gruppe.js b/public/js/api/lehrveranstaltung/gruppe.js
index 44340bec7..23db4c069 100644
--- a/public/js/api/lehrveranstaltung/gruppe.js
+++ b/public/js/api/lehrveranstaltung/gruppe.js
@@ -18,6 +18,14 @@ export default {
 			params: newData
 		};
 	},
+	getGruppe(gruppe)
+	{
+		return {
+			method: 'post',
+			url: '/api/frontend/v1/lv/gruppe/getGruppe/',
+			params: gruppe
+		};
+	},
 	getByLehreinheit(lehreinheit_id)
 	{
 		return {
diff --git a/public/js/api/lehrveranstaltung/letermine.js b/public/js/api/lehrveranstaltung/letermine.js
new file mode 100644
index 000000000..e5b3093f5
--- /dev/null
+++ b/public/js/api/lehrveranstaltung/letermine.js
@@ -0,0 +1,19 @@
+export default {
+	getCourselist(le_id, start_date, end_date, stundenplan)
+	{
+		return {
+			method: 'get',
+			url: '/api/frontend/v1/lvPlan/getLeEvents/' + encodeURIComponent(le_id) + "/" + encodeURIComponent(start_date) + "/" + encodeURIComponent(end_date) + "/" + encodeURIComponent(stundenplan),
+		};
+	},
+	exportCalendar(le_id, stundenplan)
+	{
+		return FHC_JS_DATA_STORAGE_OBJECT.app_root +  'content/statistik/termine.xls.php?lehreinheit_id=' + encodeURIComponent(le_id) + '&db_stpl_table='+encodeURIComponent(stundenplan);
+	},
+	getStudiensemester(){
+		return {
+			method: 'get',
+			url: '/api/frontend/v1/lv/setup/getStudiensemester/'
+		};
+	},
+};
diff --git a/public/js/api/lehrveranstaltung/lvtermine.js b/public/js/api/lehrveranstaltung/lvtermine.js
new file mode 100644
index 000000000..35fdc5ca8
--- /dev/null
+++ b/public/js/api/lehrveranstaltung/lvtermine.js
@@ -0,0 +1,19 @@
+export default {
+	getCourselist(lv_id, start_date, end_date, stundenplan)
+	{
+		return {
+			method: 'get',
+			url: '/api/frontend/v1/lvPlan/getLvEvents/' + encodeURIComponent(lv_id) + "/" + encodeURIComponent(start_date) + "/" + encodeURIComponent(end_date) + "/" + encodeURIComponent(stundenplan),
+		};
+	},
+	exportCalendar(lv_id, stundenplan)
+	{
+		return FHC_JS_DATA_STORAGE_OBJECT.app_root +  'content/statistik/termine.xls.php?lehrveranstaltung_id=' + encodeURIComponent(lv_id) + '&db_stpl_table='+encodeURIComponent(stundenplan);
+	},
+	getStudiensemester(){
+		return {
+			method: 'get',
+			url: '/api/frontend/v1/lv/setup/getStudiensemester/'
+		};
+	},
+};
diff --git a/public/js/api/lehrveranstaltung/noten.js b/public/js/api/lehrveranstaltung/noten.js
new file mode 100644
index 000000000..fdcbb6f1e
--- /dev/null
+++ b/public/js/api/lehrveranstaltung/noten.js
@@ -0,0 +1,25 @@
+import Grades from '../factory/stv/grades.js';
+
+export default {
+	...Grades,
+	getCertificate(lv_id, studiensemester_kurzbz) {
+		let url = 'api/frontend/v1/lv/noten/getCertificate/' + encodeURIComponent(lv_id);
+		if (!!studiensemester_kurzbz) {
+			url = url + '/' + encodeURIComponent(studiensemester_kurzbz);
+		}
+		return {
+			method: 'get',
+			url: url
+		};
+	},
+	getTeacherProposal(lv_id, studiensemester_kurzbz) {
+		let url = 'api/frontend/v1/lv/noten/getTeacherProposal/' + encodeURIComponent(lv_id);
+		if (!!studiensemester_kurzbz) {
+			url = url + '/' + encodeURIComponent(studiensemester_kurzbz);
+		}
+		return {
+			method: 'get',
+			url: url
+		};
+	},
+};
\ No newline at end of file
diff --git a/public/js/api/lehrveranstaltung/setup.js b/public/js/api/lehrveranstaltung/setup.js
index 78f78b05b..dab1062a4 100644
--- a/public/js/api/lehrveranstaltung/setup.js
+++ b/public/js/api/lehrveranstaltung/setup.js
@@ -1,9 +1,16 @@
 export default {
-	getTabs()
+	getLETabs()
 	{
 		return {
 			method: 'get',
-			url: '/api/frontend/v1/lv/setup/getTabs/'
+			url: '/api/frontend/v1/lv/setup/getLETabs/'
+		};
+	},
+	getLVTabs()
+	{
+		return {
+			method: 'get',
+			url: '/api/frontend/v1/lv/setup/getLVTabs/'
 		};
 	},
 }
diff --git a/public/js/components/LVVerwaltung/Details/Gruppen.js b/public/js/components/LVVerwaltung/Details/Gruppen.js
index 024bf6468..5244136cc 100644
--- a/public/js/components/LVVerwaltung/Details/Gruppen.js
+++ b/public/js/components/LVVerwaltung/Details/Gruppen.js
@@ -2,6 +2,7 @@ import {CoreFilterCmpt} from "../../filter/Filter.js";
 import FormForm from '../../Form/Form.js';
 import FormInput from '../../Form/Input.js';
 import ApiGruppe from "../../../api/lehrveranstaltung/gruppe.js";
+import drop from '../../../directives/drop.js';
 export default{
 	name: "LVGruppen",
 	components: {
@@ -9,6 +10,9 @@ export default{
 		FormForm,
 		FormInput
 	},
+	directives: {
+		drop
+	},
 	props: {
 		lehreinheit_id: Number
 	},
@@ -187,28 +191,48 @@ export default{
 					this.reload();
 				})
 		},
+		onDropVerband(node, gruppe) {
+			this.$api.call(ApiGruppe.getGruppe(gruppe))
+				.then(result => result.data)
+				.then(result => {
+
+					let newData = {
+						'gid': result,
+						'lehreinheit_id': this.lehreinheit_id,
+						'lehrverband': gruppe.lehrverband,
+					}
+					this.$api.call(ApiGruppe.add(newData))
+						.then(result => {
+							this.reload()
+						})
+			});
+
+		},
+
 	},
 	template: `
-		<core-filter-cmpt
-			ref="table"
-			:tabulator-options="tabulatorOptions"
-			:tabulator-events="tabulatorEvents"
-			table-only
-			:side-menu="false"
-			:reload=true
-			>
-			<template #search> <!--TODO (david) Slot prüfen -->
-				<form-input
-					type="autocomplete"
-					:suggestions="filteredGroups"
-					:placeholder="$p.t('lehre', 'addGroup')"
-					v-model="selectedGroup"
-					field="label"
-					@item-select="addGroup"
-					@complete="searchGroup"
-				></form-input>
-			</template>
-			
-		</core-filter-cmpt>
+		<div v-drop:link-strict.verband="(evt, gruppe) => onDropVerband(node, gruppe)">
+			<core-filter-cmpt
+				ref="table"
+				:tabulator-options="tabulatorOptions"
+				:tabulator-events="tabulatorEvents"
+				table-only
+				:side-menu="false"
+				:reload=true
+				>
+				<template #search> <!--TODO (david) Slot prüfen -->
+					<form-input
+						type="autocomplete"
+						:suggestions="filteredGroups"
+						:placeholder="$p.t('lehre', 'addGroup')"
+						v-model="selectedGroup"
+						field="label"
+						@item-select="addGroup"
+						@complete="searchGroup"
+					></form-input>
+				</template>
+				
+			</core-filter-cmpt>
+		</div>
 		`
 };
\ No newline at end of file
diff --git a/public/js/components/LVVerwaltung/LVVerwaltung.js b/public/js/components/LVVerwaltung/LVVerwaltung.js
index 57b990e4c..08c453447 100644
--- a/public/js/components/LVVerwaltung/LVVerwaltung.js
+++ b/public/js/components/LVVerwaltung/LVVerwaltung.js
@@ -9,6 +9,8 @@ import LvTabs from "./Setup/Tabs.js";
 import ApiDetails from "../../api/lehrveranstaltung/details.js";
 import ApiLektor from "../../api/lehrveranstaltung/lektor.js";
 import ApiSearchbar from "../../api/factory/searchbar.js";
+import AppConfig from "../AppConfig.js";
+import ApiLvConfig from "../../api/lehrveranstaltung/config.js";
 
 
 export default {
@@ -21,8 +23,11 @@ export default {
 		StvStudiensemester,
 		LvTable,
 		LvTabs,
+		AppConfig
 	},
 	props: {
+		avatarUrl: String,
+		logoutUrl: String,
 		defaultSemester: String,
 		lvRoot: String,
 		permissions: Object,
@@ -37,7 +42,6 @@ export default {
 			lehreinheitAnmerkungDefault: (this.config.lehreinheitAnmerkungDefault || '').replace(/\\n/g, '\n'),
 			lehreinheitRaumtypDefault: this.config.lehreinheitRaumtypDefault,
 			lehreinheitRaumtypAlternativeDefault: this.config.lehreinheitRaumtypAlternativeDefault,
-
 			permissionLehrveranstaltung: this.permissions['lehre/lehrveranstaltung'],
 			permissionGruppenEntfernen: this.permissions['lv-plan/gruppenentfernen'],
 			permissionLektorEntfernen: this.permissions['lv-plan/lektorentfernen'],
@@ -45,6 +49,8 @@ export default {
 	},
 	data() {
 		return {
+			appconfig:{},
+			configEndpoints: ApiLvConfig,
 			selected: [],
 			studiengang: "",
 			selectedStudiensemester: this.defaultSemester,
@@ -104,6 +110,71 @@ export default {
 		semester() {
 			return this.filter.semester;
 		},
+		appMenuExtraItems()
+		{
+			let extraItems = [];
+
+			const studiengang_kz = this.stg || '';
+			const studiensemester = this.selectedStudiensemester;
+			const semester = this.semester || '';
+			const uid = this.emp || '';
+
+
+			extraItems.push(
+				{
+					description: 'lehre/berichte',
+					requires: ['stg'],
+					children: [
+						{
+							link: FHC_JS_DATA_STORAGE_OBJECT.app_root
+								+ 'content/statistik/lvplanung.xls.php'
+								+ '?studiengang_kz=' + studiengang_kz
+								+ '&studiensemester_kurzbz=' + studiensemester
+								+ '&semester=' + semester,
+							description: 'lehre/lvplanung',
+							requires: ['stg']
+						},
+						{
+							link: FHC_JS_DATA_STORAGE_OBJECT.app_root
+								+ 'content/statistik/lehrauftragsliste_gst.xls.php'
+								+ '?studiengang_kz=' + studiengang_kz
+								+ '&studiensemester_kurzbz=' + studiensemester
+								+ '&semester=' + semester,
+							description: 'lehre/lehrauftragsliste',
+							requires: ['stg']
+						},
+						{
+							link: FHC_JS_DATA_STORAGE_OBJECT.app_root
+								+ 'content/pdfExport.php?xml=lehrauftrag.xml.php'
+								+ '&xsl=Lehrauftrag'
+								+ '&stg_kz=' + studiengang_kz
+								+ '&ss=' + studiensemester,
+							description: 'lehre/lehrauftraege',
+							requires: ['stg']
+						},
+						{
+							link: FHC_JS_DATA_STORAGE_OBJECT.app_root
+								+ 'content/pdfExport.php?xml=lehrauftrag.xml.php'
+								+ '&xsl=Lehrauftrag'
+								+ '&stg_kz=' + studiengang_kz
+								+ '&ss=' + studiensemester
+								+ '&uid=' + uid,
+							description: 'lehre/lehrauftragslisteemp',
+							requires: ['emp']
+						}
+					]
+				},
+				{
+					link: FHC_JS_DATA_STORAGE_OBJECT.app_root
+						+ 'vilesci/lehre/lehrveranstaltung.php'
+						+ '?stg_kz=' + studiengang_kz,
+					description: 'lehre/extrakvverwaltung',
+					requires: ['stg']
+				}
+			);
+
+			return extraItems;
+		}
 	},
 	methods: {
 		updateFilter()
@@ -188,6 +259,21 @@ export default {
 			}
 			this.selectedStudiensemester = stdsem;
 			this.selected = [];
+		},
+		isDisabled(item)
+		{
+			if (!item?.requires?.length)
+				return false;
+
+			const values = {
+				stg: this.stg,
+				emp: this.emp,
+				studiensemester: this.selectedStudiensemester,
+				semester: this.semester
+			};
+
+			return item.requires.some(req => !values[req]);
+
 		}
 	},
 	created() {
@@ -261,6 +347,51 @@ export default {
 				<span class="fa-solid fa-table-list"></span>
 			</button>
 			<core-searchbar :searchoptions="searchbaroptions" :searchfunction=searchfunction class="searchbar w-100"></core-searchbar>
+			<div id="nav-user" class="dropdown">
+				<button
+					id="nav-user-btn"
+					class="btn btn-link rounded-0 py-0"
+					type="button"
+					data-bs-toggle="dropdown"
+					data-bs-target="#nav-user-menu"
+					aria-expanded="false"
+					aria-controls="nav-user-menu"
+				>
+					<img
+						:src="avatarUrl"
+						:alt="$p.t('profilUpdate/profilBild')"
+						class="bg-light avatar rounded-circle border border-light"
+					/>
+				</button>
+				<ul
+					ref="navUserDropdown"
+					class="dropdown-menu dropdown-menu-dark dropdown-menu-end rounded-0 text-center m-0"
+					aria-labelledby="nav-user-btn"
+				>
+					<li>
+						<button
+							type="button"
+							class="dropdown-item"
+							data-bs-toggle="modal"
+							data-bs-target="#configModal"
+						>
+							{{ $p.t('ui/settings') }}
+						</button>
+					</li>
+					<li><hr class="dropdown-divider m-0"/></li>
+					<li>
+						<nav-language
+							item-class="dropdown-item border-left-dark"
+						/>
+					</li>
+					<li><hr class="dropdown-divider m-0"/></li>
+					<li>
+						<a class="dropdown-item" :href="logoutUrl">
+							{{ $p.t('ui/logout') }}
+						</a>
+					</li>
+				</ul>
+			</div>
 		</header>
 		<div class="container-fluid overflow-hidden">
 			<div class="row h-100">
@@ -270,7 +401,40 @@ export default {
 						<button type="button" class="btn-close text-reset" data-bs-dismiss="offcanvas" :aria-label="$p.t('ui/schliessen')"></button>
 					</div>
 					<div class="offcanvas-body">
-						<app-menu app-identifier="lvv" />
+						<app-menu app-identifier="lvv">
+							<template v-for="(item, key) in appMenuExtraItems" :key="key">
+								<li v-if="item.children" class="dropend">
+									<a
+										class="dropdown-toggle" 
+										href="#"
+										role="button" 
+										data-bs-toggle="dropdown"
+										aria-expanded="false"
+										data-bs-popper-config='{"strategy":"fixed"}'
+									>
+										{{ $p.t(item.description) }}
+									</a>
+									<ul class="dropdown-menu p-0">
+										<li
+											v-for="(child, childKey) in item.children"
+											:key="childKey"
+										>
+											<a class="dropdown-item" :href="child.link" target="_blank" :class="{ disabled: isDisabled(child) }">
+												{{ $p.t(child.description) }}
+											</a>
+										</li>
+									</ul>
+								</li>
+								<li v-else>
+									<a 
+										:href="item.link" 
+										target="_blank" 
+										:class="{ disabled: isDisabled(item) }">
+										{{ $p.t(item.description) }}
+									</a>
+								</li>
+							</template>
+						</app-menu>
 					</div>
 				</aside>
 				<nav id="sidebarMenu" class="bg-light offcanvas offcanvas-start col-md p-md-0 h-100">
@@ -325,5 +489,6 @@ export default {
 				</main>
 			</div>
 		</div>
+		<app-config ref="config" v-model="appconfig" :endpoints="configEndpoints"></app-config>
 	</div>`
 };
diff --git a/public/js/components/LVVerwaltung/Lektor/Daten.js b/public/js/components/LVVerwaltung/Lektor/Daten.js
index 21e5dc196..0263b236f 100644
--- a/public/js/components/LVVerwaltung/Lektor/Daten.js
+++ b/public/js/components/LVVerwaltung/Lektor/Daten.js
@@ -140,7 +140,7 @@ export default{
 					{
 						this.$emit('changedLektor', this.changed.mitarbeiter_uid);
 					}
-					if (this.changed.semesterstunden || this.changed.stundensatz)
+					else if (this.changed.semesterstunden || this.changed.stundensatz)
 					{
 						this.$emit('changedCosts');
 					}
@@ -183,9 +183,6 @@ export default{
 		},
 
 	},
-	created() {
-		this.getLektorData()
-	},
 	template: `
 		<core-form ref="form" @submit.prevent="updateDaten">
 			<div class="position-sticky top-0 z-1">
diff --git a/public/js/components/LVVerwaltung/Setup/Table.js b/public/js/components/LVVerwaltung/Setup/Table.js
index 1a5963129..28c7ceb87 100644
--- a/public/js/components/LVVerwaltung/Setup/Table.js
+++ b/public/js/components/LVVerwaltung/Setup/Table.js
@@ -57,6 +57,7 @@ export default {
 				if (this.$refs.table && this.$refs.table.tabulator)
 				{
 					this.expanded = [];
+					this.currentTreeLevel = 0;
 					this.reload();
 				}
 			},
@@ -143,7 +144,8 @@ export default {
 					headerFilterFunc: extendedHeaderFilter,
 				},
 				layout: 'fitDataStretch',
-				persistenceID: 'lehrveranstaltungen_2025_07_31_v1',
+				height: '100%',
+				persistenceID: 'lehrveranstaltungen_2026_07_15_v1',
 				selectableRowsRangeMode: 'click',
 				selectableRows: true,
 				rowContextMenu: (component, e) => {
@@ -238,14 +240,13 @@ export default {
 
 			if (data[0]?.lehreinheit_id !== undefined && this.selectedColumnValues.length === 1)
 			{
-				this.$emit('update:selected', [data[0]]);
 				this.lv_info = false
 			}
 			else if (data[0]?.lehrveranstaltung_id)
 			{
-				this.$emit('update:selected', {});
 				this.getLVInfos(data[0]);
 			}
+			this.$emit('update:selected', data);
 		},
 		getLVInfos(data)
 		{
@@ -455,47 +456,50 @@ export default {
 		},
 	},
 	template: `
-	<core-filter-cmpt
-		ref="table"
-		:tabulator-options="tabulatorOptions"
-		:tabulator-events="tabulatorEvents"
-		table-only
-		:side-menu="false"
-		:reload=true
-		new-btn-label="LV-Teil hinzufügen"
-		new-btn-show
-		:new-btn-disabled="!lv_info"
-		@click:new="showLehreinheitModal">
-		
-		<template #actions>
-			<button @click="expandTree" class="btn btn-outline-secondary" type="button" :title="$p.t('lehre', 'aufklappen')"><i class="fa-solid fa-maximize"></i></button>
-			<button @click="resetTree" class="btn btn-outline-secondary" type="button" :title="$p.t('lehre', 'zuklappen')"><i id="togglegroup" class="fa-solid fa-minimize"></i></button>
-			<core-tag ref="tagComponent"
-				:endpoint="tagEndpoint"
-				:values="selectedColumnValues"
-				@added="addedTag"
-				@deleted="deletedTag"
-				@updated="updatedTag"
-				zuordnung_typ="lehreinheit_id"
-			></core-tag>
-		</template>
-		<template #search>
-			<slot name="filterzuruecksetzen"></slot>
-		</template>
-	</core-filter-cmpt>
-	<bs-modal ref="lehreinheitModal" dialogClass="modal-xxl">
-		<template #title>
-			<p class="fw-bold mt-3">{{$p.t('lehre', 'newlehreinheit')}}</p>
-		</template>
-			
-		<template v-if="lv_info">
-			<details-form :data="lv_info"/>
-		</template>
-			
-		<template #footer>
-			<button type="button" class="btn btn-primary" @click="addNewLehreinheit">{{$p.t('ui', 'speichern')}}</button>
-		</template>
-	</bs-modal>
-
+	<div class="lv-list h-100 pt-3">
+		<div class="tabulator-container d-flex flex-column h-100">
+			<core-filter-cmpt
+				ref="table"
+				:tabulator-options="tabulatorOptions"
+				:tabulator-events="tabulatorEvents"
+				table-only
+				:side-menu="false"
+				:reload=true
+				new-btn-label="LV-Teil hinzufügen"
+				new-btn-show
+				:new-btn-disabled="!lv_info"
+				@click:new="showLehreinheitModal">
+				
+				<template #actions>
+					<button @click="expandTree" class="btn btn-outline-secondary" type="button" :title="$p.t('lehre', 'aufklappen')"><i class="fa-solid fa-maximize"></i></button>
+					<button @click="resetTree" class="btn btn-outline-secondary" type="button" :title="$p.t('lehre', 'zuklappen')"><i id="togglegroup" class="fa-solid fa-minimize"></i></button>
+					<core-tag ref="tagComponent"
+						:endpoint="tagEndpoint"
+						:values="selectedColumnValues"
+						@added="addedTag"
+						@deleted="deletedTag"
+						@updated="updatedTag"
+						zuordnung_typ="lehreinheit_id"
+					></core-tag>
+				</template>
+				<template #search>
+					<slot name="filterzuruecksetzen"></slot>
+				</template>
+			</core-filter-cmpt>
+		</div>
+		<bs-modal ref="lehreinheitModal" dialogClass="modal-xxl">
+			<template #title>
+				<p class="fw-bold mt-3">{{$p.t('lehre', 'newlehreinheit')}}</p>
+			</template>
+				
+			<template v-if="lv_info">
+				<details-form :data="lv_info"/>
+			</template>
+				
+			<template #footer>
+				<button type="button" class="btn btn-primary" @click="addNewLehreinheit">{{$p.t('ui', 'speichern')}}</button>
+			</template>
+		</bs-modal>
+	</div>
 `
 };
\ No newline at end of file
diff --git a/public/js/components/LVVerwaltung/Setup/Tabs.js b/public/js/components/LVVerwaltung/Setup/Tabs.js
index c8101846c..5425b5169 100644
--- a/public/js/components/LVVerwaltung/Setup/Tabs.js
+++ b/public/js/components/LVVerwaltung/Setup/Tabs.js
@@ -8,6 +8,7 @@ export default {
 	},
 	data() {
 		return {
+			configLETabs: {},
 			configLVTabs: {},
 		};
 	},
@@ -19,7 +20,7 @@ export default {
 			if (!this.lv || !this.lv.length)
 				return {};
 
-			return this.configLVTabs;
+			return this.configLETabs;
 		}
 	},
 	methods: {
@@ -31,26 +32,42 @@ export default {
 		}
 	},
 	created() {
-		this.$api.call(Setup.getTabs())
+		this.$api.call(Setup.getLETabs())
+			.then(result => {
+				this.configLETabs = result.data;
+			})
+			.catch(this.$fhcAlert.handleSystemError);
+
+		this.$api.call(Setup.getLVTabs())
 			.then(result => {
 				this.configLVTabs = result.data;
 			})
 			.catch(this.$fhcAlert.handleSystemError);
-
 	},
 	template: `
 		<div class="stv-details h-100 pb-3 d-flex flex-column">
 			<div v-if="!lv?.length" class="justify-content-center d-flex h-100 align-items-center">
 				Bitte eine Lehreinheit auswählen!
 			</div>
-			<div v-else-if="configLVTabs" class="d-flex flex-column h-100 pb-3">
+			<div v-else-if="configLETabs && configLVTabs" class="d-flex flex-column h-100 pb-3">
 				<fhc-tabs 
-					v-if="lv.length === 1"
+					v-if="lv.length === 1 && lv[0]?.lehreinheit_id"
+					ref="tabs"
+					:useprimevue="true"
+					:modelValue="lv[0]"
+					:config="configLETabs"
+					:default="$route.params.tab"
+					style="flex: 1 1 0%; height: 0%"
+					@changed="reload"
+				/>
+				<fhc-tabs 
+					v-else-if="lv.length === 1"
 					ref="tabs"
 					:useprimevue="true"
 					:modelValue="lv[0]"
 					:config="configLVTabs"
 					:default="$route.params.tab"
+					style="flex: 1 1 0%; height: 0%"
 					@changed="reload"
 				/>
 			</div>
diff --git a/public/js/components/LVVerwaltung/Tabs/LVTermine.js b/public/js/components/LVVerwaltung/Tabs/LVTermine.js
new file mode 100644
index 000000000..e064dbae9
--- /dev/null
+++ b/public/js/components/LVVerwaltung/Tabs/LVTermine.js
@@ -0,0 +1,21 @@
+import TableLvList from "../../Stv/Studentenverwaltung/Details/Lehrveranstaltungstermine/ListLehrveranstaltungstermine.js";
+import ApiLVTermine from "../../../api/lehrveranstaltung/lvtermine.js";
+
+export default {
+	name: "LVTabTermine",
+	components: {
+		TableLvList
+	},
+	props: {
+		modelValue: Object,
+	},
+	data() {
+		return {
+			endpoint: ApiLVTermine
+		};
+	},
+	template: `
+	<div class="lv-details-course-list h-100 d-flex flex-column">
+		<table-lv-list ref="tbl_course_list" :id="modelValue.lehrveranstaltung_id" :endpoint="endpoint"></table-lv-list>
+	</div>`
+};
\ No newline at end of file
diff --git a/public/js/components/LVVerwaltung/Tabs/Noten.js b/public/js/components/LVVerwaltung/Tabs/Noten.js
new file mode 100644
index 000000000..8b01a017d
--- /dev/null
+++ b/public/js/components/LVVerwaltung/Tabs/Noten.js
@@ -0,0 +1,116 @@
+import NotenZeugnis from "../../Stv/Studentenverwaltung/Details/Noten/Zeugnis.js";
+import NotenTeacher from "../../Stv/Studentenverwaltung/Details/Noten/Teacher.js";
+import NotenRepeater from "../../Stv/Studentenverwaltung/Details/Noten/Repeater.js";
+import ApiLVNoten from "../../../api/lehrveranstaltung/noten.js";
+import { highlightGesamtnote } from "../../../helpers/DocumentHelper.js";
+const LOCAL_STORAGE_ID = 'lv_details_noten_2025_12_02_stdsem_all';
+
+export default {
+	name: "LVTabNoten",
+	components: {
+		NotenZeugnis,
+		NotenTeacher,
+		NotenRepeater
+	},
+	provide() {
+		return {
+			config: this.config
+		}
+	},
+	props: {
+		modelValue: Object,
+		config: Object
+	},
+	data() {
+		return {
+			stdsem: '',
+			endpoint: ApiLVNoten,
+			tabulatorOptions: {
+				visibleColumns: {
+					vorname: true,
+					nachname: true,
+					lehrveranstaltung_bezeichnung: false
+				},
+				headerFilter: {
+					vorname: true,
+					nachname: true,
+					lehrveranstaltung_bezeichnung: false
+				},
+				persistenceZeugnisID: 'lv-details-noten-zeugnis-2025120401',
+				persistenceTeacherID: 'lv-details-noten-teacher-2025120401',
+			},
+			zeugnisLoaded: false,
+			teacherLoaded: false,
+		};
+	},
+	methods: {
+		reload() {
+			this.zeugnisLoaded = false;
+			this.teacherLoaded = false;
+
+			this.$refs.zeugnis.$refs.table.reloadTable();
+			this.$refs.teacher.$refs.table.reloadTable();
+		},
+		saveStdsem(event) {
+			window.localStorage.setItem(LOCAL_STORAGE_ID, event.target.value);
+		},
+		onZeugnisLoaded() {
+			this.zeugnisLoaded = true;
+			this.checkHighlight();
+		},
+		onTeacherLoaded() {
+			this.teacherLoaded = true;
+			this.checkHighlight();
+		},
+		checkHighlight()
+		{
+			if (!this.zeugnisLoaded || !this.teacherLoaded)
+				return;
+
+			if (!this.$refs.zeugnis || !this.$refs.teacher)
+				return;
+
+			let zeugnisTable = this.$refs.zeugnis.$refs.table.tabulator;
+			let teacherTable = this.$refs.teacher.$refs.table.tabulator;
+
+			if (!zeugnisTable || !teacherTable)
+				return;
+
+			highlightGesamtnote(zeugnisTable, teacherTable);
+		}
+	},
+	created() {
+		const savedPath = window.localStorage.getItem(LOCAL_STORAGE_ID);
+		this.stdsem = savedPath || '';
+	},
+	template: `
+	<div class="stv-details-noten d-flex flex-column overflow-hidden">
+		<div class="mb-3">
+			<select class="form-select" v-model="stdsem" @input="saveStdsem" v-if="config?.semesterSelect ?? true">
+				<option value="">{{ $p.t('ui/current_semester') }}</option>
+				<option value="true">{{ $p.t('ui/all_semester') }}</option>
+			</select>
+		</div>
+		<div class="row">
+			<div class="col-8">
+				<noten-zeugnis 
+					ref="zeugnis" 
+					:id="modelValue.lehrveranstaltung_id"
+					:all-semester="!!stdsem"
+					:endpoint="endpoint"
+					:optionalTabulatorOptions="tabulatorOptions"
+					@loaded="onZeugnisLoaded"/>
+			</div>
+			<div class="col-4">
+				<noten-teacher 
+					ref="teacher"
+					:id="modelValue.lehrveranstaltung_id"
+					:all-semester="!!stdsem"
+					:endpoint="endpoint"
+					@copied="reload"
+					:optionalTabulatorOptions="tabulatorOptions"
+					@loaded="onTeacherLoaded"/>
+			</div>
+		</div>
+	</div>`
+};
\ No newline at end of file
diff --git a/public/js/components/LVVerwaltung/Tabs/Termine.js b/public/js/components/LVVerwaltung/Tabs/Termine.js
new file mode 100644
index 000000000..8b005b6b4
--- /dev/null
+++ b/public/js/components/LVVerwaltung/Tabs/Termine.js
@@ -0,0 +1,21 @@
+import TableLvList from "../../Stv/Studentenverwaltung/Details/Lehrveranstaltungstermine/ListLehrveranstaltungstermine.js";
+import ApiLETermine from "../../../api/lehrveranstaltung/letermine.js";
+
+export default {
+	name: "LETabTermine",
+	components: {
+		TableLvList
+	},
+	props: {
+		modelValue: Object,
+	},
+	data() {
+		return {
+			endpoint: ApiLETermine
+		};
+	},
+	template: `
+	<div class="le-details-course-list h-100 d-flex flex-column">
+		<table-lv-list ref="tbl_course_list" :id="modelValue.lehreinheit_id" :endpoint="endpoint"></table-lv-list>
+	</div>`
+};
\ No newline at end of file
diff --git a/public/js/components/Stv/Studentenverwaltung/Details/Lehrveranstaltungstermine.js b/public/js/components/Stv/Studentenverwaltung/Details/Lehrveranstaltungstermine.js
index 6845613ab..6eb324f27 100644
--- a/public/js/components/Stv/Studentenverwaltung/Details/Lehrveranstaltungstermine.js
+++ b/public/js/components/Stv/Studentenverwaltung/Details/Lehrveranstaltungstermine.js
@@ -1,4 +1,5 @@
 import TableLvList from "./Lehrveranstaltungstermine/ListLehrveranstaltungstermine.js";
+import ApiStvCoursedates from "../../../../api/factory/stv/coursedates.js";
 
 export default {
 	name: "TabCourseList",
@@ -8,11 +9,13 @@ export default {
 	props: {
 		modelValue: Object,
 	},
-	data(){
-		return {}
+	data() {
+		return {
+			endpoint: ApiStvCoursedates
+		};
 	},
 	template: `
 	<div class="stv-details-course-list h-100 d-flex flex-column">	
-		<table-lv-list ref="tbl_course_list" :student="modelValue"></table-lv-list>
+		<table-lv-list ref="tbl_course_list" :id="modelValue.uid" :endpoint="endpoint"></table-lv-list>
 	</div>`
 };
\ No newline at end of file
diff --git a/public/js/components/Stv/Studentenverwaltung/Details/Lehrveranstaltungstermine/ListLehrveranstaltungstermine.js b/public/js/components/Stv/Studentenverwaltung/Details/Lehrveranstaltungstermine/ListLehrveranstaltungstermine.js
index b664964f7..855adc26b 100644
--- a/public/js/components/Stv/Studentenverwaltung/Details/Lehrveranstaltungstermine/ListLehrveranstaltungstermine.js
+++ b/public/js/components/Stv/Studentenverwaltung/Details/Lehrveranstaltungstermine/ListLehrveranstaltungstermine.js
@@ -2,8 +2,6 @@ import {CoreFilterCmpt} from "../../../../filter/Filter.js";
 import FormInput from "../../../../Form/Input.js";
 import FormForm from '../../../../Form/Form.js';
 
-import ApiStvCoursedates from "../../../../../api/factory/stv/coursedates.js";
-
 export default {
 	name: "TblCourseList",
 	components: {
@@ -17,7 +15,14 @@ export default {
 		},
 	},
 	props: {
-		student: Object
+		id: {
+			type: [Number, String],
+			required: true
+		},
+		endpoint: {
+			type: Object,
+			required: true
+		},
 	},
 	data(){
 		return {
@@ -48,14 +53,7 @@ export default {
 		initTabulatorOptions(){
 			this.tabulatorOptions = {
 				ajaxURL: 'dummy',
-				ajaxRequestFunc: () => this.$api.call(
-					ApiStvCoursedates.getCourselist({
-						student_uid: this.student.uid,
-						start_date: this.dataSem.start,
-						end_date: this.dataSem.ende,
-						group_consecutiveHours: true,
-						dbStundenplanTable: this.dbStundenplanTable})
-				),
+				ajaxRequestFunc: () => this.$api.call(this.endpoint.getCourselist(this.id, this.dataSem.start, this.dataSem.ende, this.dbStundenplanTable)),
 				ajaxResponse: (url, params, response) => {
 					return response.data;
 				},
@@ -131,7 +129,7 @@ export default {
 			this.dataSem = this.listStudiensemester.find(item => item.studiensemester_kurzbz === studiensemester_kurzbz);
 		},
 		exportToExcel(){
-			window.open(this.downloadLink, '_blank');
+			window.open(this.endpoint.exportCalendar(this.id, this.dbStundenplanTable), '_blank');
 		},
 		reload() {
 			this.$refs.table.reloadTable();
@@ -145,10 +143,13 @@ export default {
 		currentSemester(newVal, oldVal) {
 			this.getDatesOfSemester(newVal);
 		},
+		id() {
+			this.reload();
+		}
 	},
 	created(){
 		this.$api
-			.call(ApiStvCoursedates.getStudiensemester())
+			.call(this.endpoint.getStudiensemester())
 			.then(result => {
 				this.listStudiensemester = result.data;
 				this.getDatesOfSemester(this.currentSemester);
diff --git a/public/js/components/Stv/Studentenverwaltung/Details/Noten.js b/public/js/components/Stv/Studentenverwaltung/Details/Noten.js
index 71b8096ec..48863da9c 100644
--- a/public/js/components/Stv/Studentenverwaltung/Details/Noten.js
+++ b/public/js/components/Stv/Studentenverwaltung/Details/Noten.js
@@ -2,6 +2,9 @@ import NotenZeugnis from './Noten/Zeugnis.js';
 import NotenTeacher from './Noten/Teacher.js';
 import NotenRepeater from './Noten/Repeater.js';
 
+import ApiStvGrades from '../../../../api/factory/stv/grades.js';
+import { highlightGesamtnote } from "../../../../helpers/DocumentHelper.js";
+
 const LOCAL_STORAGE_ID = 'stv_details_noten_2024-11-25_stdsem_all';
 
 export default {
@@ -22,7 +25,10 @@ export default {
 	},
 	data() {
 		return {
-			stdsem: ''
+			stdsem: '',
+			endpoint: ApiStvGrades,
+			zeugnisLoaded: false,
+			teacherLoaded: false,
 		};
 	},
 	methods: {
@@ -33,6 +39,30 @@ export default {
 		},
 		saveStdsem(event) {
 			window.localStorage.setItem(LOCAL_STORAGE_ID, event.target.value);
+		},
+		onZeugnisLoaded() {
+			this.zeugnisLoaded = true;
+			this.checkHighlight();
+		},
+		onTeacherLoaded() {
+			this.teacherLoaded = true;
+			this.checkHighlight();
+		},
+		checkHighlight()
+		{
+			if (!this.zeugnisLoaded || !this.teacherLoaded)
+				return;
+
+			if (!this.$refs.zeugnis || !this.$refs.teacher)
+				return;
+
+			let zeugnisTable = this.$refs.zeugnis.$refs.table.tabulator;
+			let teacherTable = this.$refs.teacher.$refs.table.tabulator;
+
+			if (!zeugnisTable || !teacherTable)
+				return;
+
+			highlightGesamtnote(zeugnisTable, teacherTable);
 		}
 	},
 	created() {
@@ -49,10 +79,10 @@ export default {
 		</div>
 		<div class="row">
 			<div class="col-8">
-				<noten-zeugnis ref="zeugnis" :student="modelValue" :all-semester="!!stdsem"></noten-zeugnis>
+				<noten-zeugnis ref="zeugnis" :id="modelValue.prestudent_id" :all-semester="!!stdsem" :endpoint="endpoint" @loaded="onZeugnisLoaded"></noten-zeugnis>
 			</div>
 			<div class="col-4">
-				<noten-teacher ref="teacher" :student="modelValue" :all-semester="!!stdsem" @copied="reload"></noten-teacher>
+				<noten-teacher ref="teacher" :id="modelValue.prestudent_id" :endpoint="endpoint" :all-semester="!!stdsem" @copied="reload" @loaded="onTeacherLoaded"></noten-teacher>
 				<noten-repeater class="mt-4" ref="repeater" :student="modelValue" :all-semester="!!stdsem" @copied="reload"></noten-repeater>
 			</div>
 		</div>
diff --git a/public/js/components/Stv/Studentenverwaltung/Details/Noten/Teacher.js b/public/js/components/Stv/Studentenverwaltung/Details/Noten/Teacher.js
index 34a9b7adc..986aa8d4a 100644
--- a/public/js/components/Stv/Studentenverwaltung/Details/Noten/Teacher.js
+++ b/public/js/components/Stv/Studentenverwaltung/Details/Noten/Teacher.js
@@ -1,13 +1,12 @@
 import {CoreFilterCmpt} from "../../../../filter/Filter.js";
 
-import ApiStvGrades from '../../../../../api/factory/stv/grades.js';
-
 export default {
 	components: {
 		CoreFilterCmpt
 	},
 	emits: [
-		"copied"
+		"copied",
+		"loaded"
 	],
 	inject: {
 		currentSemester: {
@@ -16,20 +15,33 @@ export default {
 		}
 	},
 	props: {
-		student: Object,
-		allSemester: Boolean
+		endpoint: {
+			type: Object,
+			required: true
+		},
+		id: {
+			type: [Number, String],
+			required: true
+		},
+		allSemester: Boolean,
+		optionalTabulatorOptions: Object,
 	},
 	data() {
 		return {
-			tabulatorEvents: []
+			tabulatorEvents: [
+				{
+					event: "dataProcessed",
+					handler: () => this.$emit("loaded"),
+				},
+			]
 		};
 	},
 	computed: {
 		tabulatorOptions() {
 			return {
 				ajaxURL: 'dummy',
-				ajaxRequestFunc: () => this.$api.call(ApiStvGrades.getTeacherProposal(
-					this.student.prestudent_id,
+				ajaxRequestFunc: () => this.$api.call(this.endpoint.getTeacherProposal(
+					this.id,
 						(!this.allSemester ? this.currentSemester : null)
 				)),
 				ajaxResponse: (url, params, response) => {
@@ -77,16 +89,19 @@ export default {
 					{ field: 'lehrveranstaltung_id', title: this.$p.t('lehre/lehrveranstaltung_id'), visible: false },
 					{ field: 'punkte', title: this.$p.t('stv/grades_points'), visible: false }
 				],
+				columnDefaults: {
+					headerFilter: this.optionalTabulatorOptions?.headerFilter ?? false,
+				},
 				layout: 'fitDataStretch',
 				height: '100%',
 				selectableRows: true,
 				selectableRowsRangeMode: 'click',
-				persistenceID: 'stv-details-noten-teacher-20260217'
+				persistenceID: this.optionalTabulatorOptions?.persistenceTeacherID ?? 'stv-details-noten-teacher-2025120401',
 			};
 		}
 	},
 	watch: {
-		student(n) {
+		id() {
 			this.$refs.table.reloadTable();
 		},
 		allSemester(n) {
@@ -97,7 +112,7 @@ export default {
 		copyGrades(selected) {
 			const promises = selected.map(
 				grade => this.$api
-					.call(ApiStvGrades.copyTeacherProposalToCertificate(grade), {
+					.call(this.endpoint.copyTeacherProposalToCertificate(grade), {
 						errorHeader: grade.lehrveranstaltung_bezeichnung
 					})
 					.then(() => {
diff --git a/public/js/components/Stv/Studentenverwaltung/Details/Noten/Zeugnis.js b/public/js/components/Stv/Studentenverwaltung/Details/Noten/Zeugnis.js
index 755f3628d..cc58850ed 100644
--- a/public/js/components/Stv/Studentenverwaltung/Details/Noten/Zeugnis.js
+++ b/public/js/components/Stv/Studentenverwaltung/Details/Noten/Zeugnis.js
@@ -2,8 +2,6 @@ import {CoreFilterCmpt} from "../../../../filter/Filter.js";
 import ZeugnisActions from './Zeugnis/Actions.js';
 import ZeugnisDocuments from './Zeugnis/Documents.js';
 
-import ApiStvGrades from '../../../../../api/factory/stv/grades.js';
-
 export default {
 	name: 'Zeugnis',
 	components: {
@@ -11,6 +9,7 @@ export default {
 		ZeugnisActions,
 		ZeugnisDocuments
 	},
+	emits: ['loaded'],
 	inject: {
 		config: {
 			from: 'config',
@@ -22,7 +21,15 @@ export default {
 		}
 	},
 	props: {
-		student: Object,
+		endpoint: {
+			type: Object,
+			required: true
+		},
+		id: {
+			type: [Number, String],
+			required: true
+		},
+		optionalTabulatorOptions: Object,
 		allSemester: Boolean
 	},
 	data() {
@@ -35,6 +42,10 @@ export default {
 						return item;
 					})
 				},
+				{
+					event: "dataProcessed",
+					handler: () => this.$emit("loaded")
+				},
 				{
 					event: "rowSelected",
 					handler: row => row.getElement().style.zIndex = 12
@@ -53,7 +64,7 @@ export default {
 	computed: {
 		tabulatorOptions() {
 			const listPromise = this.$api
-				.call(ApiStvGrades.list())
+				.call(this.endpoint.list())
 				.then(res => res.data.map(({bezeichnung: label, note: value}) => ({label, value})));
 
 			let gradeField = {
@@ -86,7 +97,7 @@ export default {
 							note_bezeichnung
 						}))
 						// send to backend
-						.then(data => this.$api.call(ApiStvGrades.updateCertificate(data)))
+						.then(data => this.$api.call(this.endpoint.updateCertificate(data)))
 						// get bezeichnung again
 						.then(() => listPromise)
 						.then(list => list.find(el => el.value == note))
@@ -109,7 +120,7 @@ export default {
 							if (filterTerm) {
 								return this.$api
 									.call(
-										ApiStvGrades.getGradeFromPoints(
+										this.endpoint.getGradeFromPoints(
 											filterTerm,
 											cell.getData().lehrveranstaltung_id,
 											this.currentSemester
@@ -142,6 +153,8 @@ export default {
 					.then(() => node.innerText = this.$p.t('ui/loading'))
 					.catch(this.$fhcAlert.handleSystemError);
 				gradeField.editorParams.placeholderLoading = node;
+				gradeField.visible = this.optionalTabulatorOptions?.visibleColumns?.note ?? true
+				gradeField.headerFiler = this.optionalTabulatorOptions?.headerFilter?.note || this.optionalTabulatorOptions?.note || false
 			}
 
 			const columns = [
@@ -238,8 +251,8 @@ export default {
 
 			return {
 				ajaxURL: 'dummy',
-				ajaxRequestFunc: () => this.$api.call(ApiStvGrades.getCertificate(
-					this.student.prestudent_id,
+				ajaxRequestFunc: () => this.$api.call(this.endpoint.getCertificate(
+					this.id,
 						(!this.allSemester ? this.currentSemester : null)
 				)),
 				ajaxResponse: (url, params, response) => {
@@ -248,9 +261,10 @@ export default {
 				columns,
 				height: '100%',
 				layout: 'fitDataStretchFrozen',
-				selectableRows: 1,
+				selectable: true,
 				selectableRowsRangeMode: 'click',
-				persistenceID: 'stv-details-noten-zeugnis-20260217',
+				selectableRows: true,
+				persistenceID: this.optionalTabulatorOptions?.persistenceZeugnisID ?? 'stv-details-noten-zeugnis-20260217',
 				persistence:{
 					columns: ["width", "visible", "frozen"]
 				}
@@ -258,7 +272,8 @@ export default {
 		}
 	},
 	watch: {
-		student(n) {
+		id()
+		{
 			this.$refs.table.reloadTable();
 		},
 		allSemester(n) {
@@ -269,7 +284,7 @@ export default {
 		setGrade(data) {
 			this.$api
 				.call(
-					ApiStvGrades.updateCertificate(data),
+					this.endpoint.updateCertificate(data),
 					{ errorHeader: data.lehrveranstaltung_bezeichnung }
 				)
 				.then(this.$refs.table.reloadTable)
@@ -282,7 +297,7 @@ export default {
 				.confirmDelete()
 				.then(result => result ? data : Promise.reject({handled:true}))
 				.then(data => this.$api.call(
-					ApiStvGrades.deleteCertificate(data),
+					this.endpoint.deleteCertificate(data),
 					{ errorHeader: data.lehrveranstaltung_bezeichnung }
 				))
 				.then(this.$refs.table.reloadTable)
@@ -291,7 +306,7 @@ export default {
 		}
 	},
 	created() {
-		this.$p.loadCategory(['global', 'stv', 'lehre'])
+		this.$p.loadCategory(['global', 'stv', 'lehre', 'person'])
 			.then(() => {
 				if (this.$refs.table.tableBuilt)
 					this.$refs.table.tabulator.columnManager.setColumns(this.tabulatorOptions.columns);
diff --git a/public/js/helpers/DocumentHelper.js b/public/js/helpers/DocumentHelper.js
new file mode 100644
index 000000000..c37c632d5
--- /dev/null
+++ b/public/js/helpers/DocumentHelper.js
@@ -0,0 +1,44 @@
+export function highlightGesamtnote(zeugnisTable, teacherTable)
+{
+	let zeugnisData = zeugnisTable.getData();
+
+	let studentsWithNote = new Set();
+
+	zeugnisData.forEach(row => {
+		let student = row.uid;
+		let lv = row.lehrveranstaltung_id;
+		let note = row.note;
+
+		if (!student || !lv)
+			return;
+
+		if (note == null || note === "")
+			return;
+
+		let key = `${student}_${lv}`;
+		studentsWithNote.add(key);
+	});
+
+	teacherTable.deselectRow();
+
+	teacherTable.getRows().forEach(row => {
+		let data = row.getData();
+
+		let student = data.student_uid;
+		let lv = data.lehrveranstaltung_id;
+		let note = data.note;
+
+		if (!student || !lv)
+			return;
+
+		if (note == null || note === "")
+			return;
+
+		let key = `${student}_${lv}`;
+
+		if (!studentsWithNote.has(key))
+		{
+			row.select();
+		}
+	});
+}
\ No newline at end of file
diff --git a/public/js/helpers/DragAndDrop.js b/public/js/helpers/DragAndDrop.js
index 46bc6dcf6..e08740344 100644
--- a/public/js/helpers/DragAndDrop.js
+++ b/public/js/helpers/DragAndDrop.js
@@ -30,6 +30,10 @@ const TYPE_DEFINITION = {
 	prestudent: {
 		id: "prestudent_id",
 		dragIcon: "fa-solid fa-user-graduate text-muted"
+	},
+	verband: {
+		id: "gruppe_id",
+		dragIcon: "fa-solid fa-user-group text-muted"
 	}
 	// TODO: IMPLEMENT OTHER TYPES
 };
diff --git a/system/phrasesupdate.php b/system/phrasesupdate.php
index 0c938c35f..af3ff53c8 100644
--- a/system/phrasesupdate.php
+++ b/system/phrasesupdate.php
@@ -51550,6 +51550,126 @@ array(
 			)
 		)
 	),
+	array(
+		'app' => 'core',
+		'category' => 'lehre',
+		'phrase' => 'berichte',
+		'insertvon' => 'system',
+		'phrases' => array(
+			array(
+				'sprache' => 'German',
+				'text' => 'Berichte',
+				'description' => '',
+				'insertvon' => 'system'
+			),
+			array(
+				'sprache' => 'English',
+				'text' => 'Reports',
+				'description' => '',
+				'insertvon' => 'system'
+			)
+		)
+	),
+	array(
+		'app' => 'core',
+		'category' => 'lehre',
+		'phrase' => 'lvplanung',
+		'insertvon' => 'system',
+		'phrases' => array(
+			array(
+				'sprache' => 'German',
+				'text' => 'LV-Planung',
+				'description' => '',
+				'insertvon' => 'system'
+			),
+			array(
+				'sprache' => 'English',
+				'text' => 'Course Planning',
+				'description' => '',
+				'insertvon' => 'system'
+			)
+		)
+	),
+	array(
+		'app' => 'core',
+		'category' => 'lehre',
+		'phrase' => 'lehrauftragsliste',
+		'insertvon' => 'system',
+		'phrases' => array(
+			array(
+				'sprache' => 'German',
+				'text' => 'Lehrauftragsliste',
+				'description' => '',
+				'insertvon' => 'system'
+			),
+			array(
+				'sprache' => 'English',
+				'text' => 'Teaching Assignments',
+				'description' => '',
+				'insertvon' => 'system'
+			)
+		)
+	),
+	array(
+		'app' => 'core',
+		'category' => 'lehre',
+		'phrase' => 'lehrauftraege',
+		'insertvon' => 'system',
+		'phrases' => array(
+			array(
+				'sprache' => 'German',
+				'text' => 'Lehraufträge',
+				'description' => '',
+				'insertvon' => 'system'
+			),
+			array(
+				'sprache' => 'English',
+				'text' => 'Lectureships',
+				'description' => '',
+				'insertvon' => 'system'
+			)
+		)
+	),
+	array(
+		'app' => 'core',
+		'category' => 'lehre',
+		'phrase' => 'lehrauftragslisteemp',
+		'insertvon' => 'system',
+		'phrases' => array(
+			array(
+				'sprache' => 'German',
+				'text' => 'Lehrauftrag Lehrende',
+				'description' => '',
+				'insertvon' => 'system'
+			),
+			array(
+				'sprache' => 'English',
+				'text' => 'Teaching Assignment Lecturers',
+				'description' => '',
+				'insertvon' => 'system'
+			)
+		)
+	),
+	array(
+		'app' => 'core',
+		'category' => 'lehre',
+		'phrase' => 'extrakvverwaltung',
+		'insertvon' => 'system',
+		'phrases' => array(
+			array(
+				'sprache' => 'German',
+				'text' => 'Lehrveranstaltung Verwaltung',
+				'description' => '',
+				'insertvon' => 'system'
+			),
+			array(
+				'sprache' => 'English',
+				'text' => 'Course Management',
+				'description' => '',
+				'insertvon' => 'system'
+			)
+		)
+	),
 	// feature-55614 end
 	array(
 		'app' => 'softwarebereitstellung',