diff --git a/application/controllers/Tempus.php b/application/controllers/Tempus.php
index 175a9ffa4..78efde1b4 100644
--- a/application/controllers/Tempus.php
+++ b/application/controllers/Tempus.php
@@ -34,10 +34,18 @@ class Tempus extends Auth_Controller
 		$this->load->model('organisation/Organisationseinheit_model', 'OrganisationseinheitModel');
 		$this->load->model('ressource/Kalenderstatus_model', 'KalenderStatusModel');
 
-		$this->StudiengangModel->addOrder('typ');
-		$this->StudiengangModel->addOrder('kurzbz');
-		$this->StudiengangModel->addJoin('tbl_organisationseinheit', 'oe_kurzbz', 'LEFT');
-		$organisationen = getData($this->StudiengangModel->loadWhere(array('tbl_studiengang.aktiv' => 'true')));
+		$this->OrganisationseinheitModel->addJoin('tbl_studiengang', 'oe_kurzbz', 'LEFT');
+
+		$this->OrganisationseinheitModel->addSelect('public.tbl_organisationseinheit.organisationseinheittyp_kurzbz,
+															public.tbl_organisationseinheit.bezeichnung,
+															public.tbl_studiengang.studiengang_kz,
+															public.tbl_organisationseinheit.oe_kurzbz,
+															tbl_studiengang.typ,
+															COALESCE(public.tbl_studiengang.bezeichnung, \'\') as stgbezeichnung');
+		$this->OrganisationseinheitModel->addOrder('tbl_organisationseinheit.aktiv', 'DESC');
+		$this->OrganisationseinheitModel->addOrder('tbl_organisationseinheit.organisationseinheittyp_kurzbz');
+		$organisationen = getData($this->OrganisationseinheitModel->loadWhere(array("tbl_organisationseinheit.aktiv" => true)));
+
 
 		$this->StudiensemesterModel->addOrder('start', 'DESC');
 		$studiensemestern = getData($this->StudiensemesterModel->load());
diff --git a/application/controllers/api/frontend/v1/tempus/KalenderSync.php b/application/controllers/api/frontend/v1/tempus/KalenderSync.php
index ed5b7b145..13e4cc012 100644
--- a/application/controllers/api/frontend/v1/tempus/KalenderSync.php
+++ b/application/controllers/api/frontend/v1/tempus/KalenderSync.php
@@ -46,12 +46,18 @@ class KalenderSync extends FHCAPI_Controller
 
 		$language = getUserLanguage() == 'German' ? 0 : 1;
 
-		$this->_ci->KalenderStatusModel->addSelect('tbl_kalender_syncstatus.*, array_to_json(bezeichnung_mehrsprachig::varchar[])->>' . $language .' AS sync_status_kurzbz, tbl_organisationseinheit.bezeichnung as oebezeichnung, tbl_studienplan.bezeichnung as studienplanbezeichnung');
+		$this->_ci->KalenderStatusModel->addSelect('tbl_kalender_syncstatus.*, array_to_json(bezeichnung_mehrsprachig::varchar[])->>' . $language .' AS sync_status, tbl_organisationseinheit.bezeichnung as oebezeichnung, tbl_studienplan.bezeichnung as studienplanbezeichnung');
 		$this->_ci->KalenderStatusModel->addJoin('lehre.tbl_kalender_status', 'tbl_kalender_syncstatus.sync_status_kurzbz = tbl_kalender_status.status_kurzbz');
 		$this->_ci->KalenderStatusModel->addJoin('public.tbl_organisationseinheit', 'tbl_kalender_syncstatus.oe_kurzbz = tbl_organisationseinheit.oe_kurzbz');
 		$this->_ci->KalenderStatusModel->addJoin('lehre.tbl_studienplan', 'tbl_kalender_syncstatus.studienplan_id = tbl_studienplan.studienplan_id', 'LEFT');
+		$this->_ci->KalenderStatusModel->addJoin('public.tbl_studiensemester', 'tbl_kalender_syncstatus.studiensemester_kurzbz = tbl_studiensemester.studiensemester_kurzbz');
+		$this->_ci->KalenderStatusModel->addOrder('public.tbl_studiensemester.start', 'DESC');
 
-		$data = $this->_ci->KalendersyncstatusModel->loadWhere(array('studiensemester_kurzbz' => $studiensemester_kurzbz));
+
+		if ($studiensemester_kurzbz === 'all')
+			$data = $this->_ci->KalendersyncstatusModel->load();
+		else
+			$data = $this->_ci->KalendersyncstatusModel->loadWhere(array('tbl_kalender_syncstatus.studiensemester_kurzbz' => $studiensemester_kurzbz));
 
 		if (isError($data))
 			$this->terminateWithError(getError($data));
diff --git a/application/libraries/KalenderSyncLib.php b/application/libraries/KalenderSyncLib.php
index ee0197e20..284a13274 100644
--- a/application/libraries/KalenderSyncLib.php
+++ b/application/libraries/KalenderSyncLib.php
@@ -18,6 +18,7 @@ class KalenderSyncLib
 		$this->_ci->load->model('ressource/Kalender_model', 'KalenderModel');
 		$this->_ci->load->model('ressource/Kalendersyncstatus_model', 'KalendersyncstatusModel');
 		$this->_ci->load->model('organisation/Studiengang_model', 'StudiengangModel');
+		$this->_ci->load->model('organisation/Organisationseinheit_model', 'OrganisationseinheitModel');
 	}
 
 	public function run($studiensemester_kurzbz)
@@ -181,17 +182,26 @@ class KalenderSyncLib
 
 		$studiengang_kz = getData($studiengang_result);
 
+		if (!hasData($studiengang_result))
+		{
+			$organisationseinheiten = $this->_ci->OrganisationseinheitModel->getChilds($oe_kurzbz);
+			$oe_kurzbz = hasData($organisationseinheiten) ? array_column(getData($organisationseinheiten), 'oe_kurzbz') : [];
+		}
+
 		$this->_ci->KalenderModel->addDistinct('tbl_kalender.kalender_id');
 		$this->_ci->KalenderModel->addSelect('tbl_kalender.kalender_id');
 		$this->_ci->KalenderModel->addJoin('lehre.tbl_kalender_lehreinheit', 'tbl_kalender.kalender_id = tbl_kalender_lehreinheit.kalender_id');
 		$this->_ci->KalenderModel->addJoin('lehre.tbl_lehreinheit', 'tbl_kalender_lehreinheit.lehreinheit_id = tbl_lehreinheit.lehreinheit_id');
 		$this->_ci->KalenderModel->addJoin('lehre.tbl_lehrveranstaltung', 'tbl_lehreinheit.lehrveranstaltung_id = tbl_lehrveranstaltung.lehrveranstaltung_id');
 
-		//TODO (david) oe_kurzbz rekursiv?
 		if (!is_null($studiengang_kz))
+		{
 			$this->_ci->KalenderModel->db->where('tbl_lehrveranstaltung.studiengang_kz', $studiengang_kz);
+		}
 		else
-			$this->_ci->KalenderModel->db->where('tbl_lehrveranstaltung.oe_kurzbz', $oe_kurzbz);
+		{
+			$this->_ci->KalenderModel->db->where_in('tbl_lehrveranstaltung.oe_kurzbz', $oe_kurzbz);
+		}
 
 		$this->_ci->KalenderModel->db->where('tbl_lehreinheit.studiensemester_kurzbz', $studiensemester_kurzbz);
 		$this->_ci->KalenderModel->db->where_in('tbl_kalender.status_kurzbz', $status_kurzbz_list);
diff --git a/application/libraries/RaumvorschlagLib.php b/application/libraries/RaumvorschlagLib.php
index 8cb4aa8a4..7e4d254b9 100644
--- a/application/libraries/RaumvorschlagLib.php
+++ b/application/libraries/RaumvorschlagLib.php
@@ -23,7 +23,6 @@ class RaumvorschlagLib
 		$this->_ci->load->model('organisation/gruppe_model', 'GruppeModel');
 		$this->_ci->load->model('organisation/Lehrverband_model', 'LehrverbandModel');
 
-		$this->_ci->load->model('education/Lehreinheitgruppe_model', 'LehreinheitgruppeModel');
 		$this->_ci->load->model('education/Lehreinheitgruppe_model', 'LehreinheitgruppeModel');
 
 		$this->_ci->load->library('CollisionChecker');
diff --git a/public/js/components/Tempus/Modal.js b/public/js/components/Tempus/Modal.js
index 981479aea..8a6232feb 100644
--- a/public/js/components/Tempus/Modal.js
+++ b/public/js/components/Tempus/Modal.js
@@ -34,29 +34,32 @@ export default {
 				return [];
 
 			return Array.from({length: this.max_semester}, (_, index) => index);
+		},
+		studienplanTrigger() {
+			return [
+				this.formData.oe_kurzbz,
+				this.formData.studiensemester_kurzbz,
+				this.formData.ausbildungssemester
+			].join('|');
 		}
 	},
 	watch: {
-		'formData.oe_kurzbz'(newOrganisation) {
+		'formData.oe_kurzbz'(newOrganisation)
+		{
 			if (!newOrganisation) {
 				this.max_semester = null;
 				this.studienplaene = [];
 				return;
 			}
 
-			let filtered_org = this.config.organisationen.filter(org => org.oe_kurzbz === newOrganisation)[0];
+			let filtered_org = (this.config.organisationen ?? []).filter(org => org.oe_kurzbz === newOrganisation)[0];
 
 			if (filtered_org && filtered_org.studiengang_kz)
 				this.getSemester(filtered_org.studiengang_kz);
 			else
 				this.max_semester = null;
-
-			this.getStudienplan();
 		},
-		'formData.studiensemester_kurzbz'() {
-			this.getStudienplan();
-		},
-		'formData.ausbildungssemester'() {
+		studienplanTrigger() {
 			this.getStudienplan();
 		}
 	},
@@ -123,7 +126,7 @@ export default {
 			this.$api.call(ApiTempusSync.getMaxSemester([stg_kz]))
 				.then(response => response.data)
 				.then(response => {
-					this.max_semester = response;
+					this.max_semester = response ?? null;
 
 					let found = this.semester.filter(semester => semester === this.formData.ausbildungssemester);
 					if (found.length === 0)
@@ -146,7 +149,7 @@ export default {
 				))
 				.then(response => response.data)
 				.then(response => {
-					this.studienplaene = response;
+					this.studienplaene = response ?? [];
 					let found = this.studienplaene.filter(plan => plan.studienplan_id === this.formData.studienplan_id);
 					if (found.length === 0)
 						this.formData.studienplan_id = null;
@@ -168,7 +171,8 @@ export default {
 				.call(ApiTempusSync.add(this.formData))
 				.then(() => {
 					this.$fhcAlert.alertSuccess(this.$p.t('ui', 'successSave'));
-					this.$emit('saved');
+					if (this.stsem_kurzbz !== this.formData.studiensemester_kurzbz)
+						this.$emit('saved', this.formData.studiensemester_kurzbz);
 					this.$refs.modal.hide();
 				})
 				.catch(this.$fhcAlert.handleSystemError);
@@ -178,31 +182,35 @@ export default {
 				.call(ApiTempusSync.updateSync(this.formData))
 				.then(() => {
 					this.$fhcAlert.alertSuccess(this.$p.t('ui', 'successSave'));
-					this.$emit('saved');
+					if (this.stsem_kurzbz !== this.formData.studiensemester_kurzbz)
+						this.$emit('saved', this.formData.studiensemester_kurzbz);
 					this.$refs.modal.hide();
 				})
 				.catch(this.$fhcAlert.handleSystemError);
 		},
-		start() {
+		start(data) {
 			this.$refs.form
-				.call(ApiTempusSync.start(this.formData))
+				.call(ApiTempusSync.start(data ?? this.formData))
 				.then(() => {
-					this.$fhcAlert.alertSuccess(this.$p.t('ui', 'successSave'));
-					this.$emit('saved');
+					this.$fhcAlert.alertSuccess(this.$p.t('ui', 'successStart'));
 					this.$refs.modal.hide();
 				})
 				.catch(this.$fhcAlert.handleSystemError);
+		},
+		hideModal()
+		{
+			this.formData = {}
 		}
 	},
 	created() {
-		console.log(this.config)
+
 		this.$api
 			.call(ApiTempusSync.getSyncStatus())
-			.then(result => this.syncStati = result.data)
+			.then(result => this.syncStati = result.data ?? [])
 			.catch(error => this.$fhcAlert.handleSystemError(error));
 	},
 	template: `
-	<bs-modal ref="modal" >
+	<bs-modal ref="modal" @hideBsModal="hideModal">
 		<template #title>
 			<template v-if="mode === 'new'">{{ $p.t('lehre', 'tempus_sync_new') }}</template>
 			<template v-else-if="mode === 'edit'">{{ $p.t('lehre', 'tempus_sync_edit') }}</template>
@@ -225,7 +233,7 @@ export default {
 					:key="organisation.oe_kurzbz"
 					:value="organisation.oe_kurzbz"
 					>
-					{{ organisation.typ.toUpperCase() }}{{ organisation.kurzbz.toUpperCase() }} ({{ organisation.kurzbzlang }})
+					[{{ organisation.organisationseinheittyp_kurzbz }}] {{ organisation.bezeichnung }} {{ ['b', 'm'].includes(organisation.typ) ? organisation.stgbezeichnung : '' }}
 				</option>
 			</form-input>
 
diff --git a/public/js/components/Tempus/TempusSync.js b/public/js/components/Tempus/TempusSync.js
index c97164984..41ad1e3e5 100644
--- a/public/js/components/Tempus/TempusSync.js
+++ b/public/js/components/Tempus/TempusSync.js
@@ -62,7 +62,7 @@ export default {
 					},
 					{titlePhrase: 'lehre/studienplan', field: 'studienplanbezeichnung', minWidth: 200},
 					{titlePhrase: 'lehre/ausbildungssemester', field: 'ausbildungssemester'},
-					{titlePhrase: 'global/status', field: 'sync_status_kurzbz'},
+					{titlePhrase: 'global/status', field: 'sync_status'},
 					{titlePhrase: 'lehre/mail_benachrichtigung', field: 'mail', formatter: 'tickCross', hozAlign: 'center', minWidth: 80},
 					{titlePhrase:'global/insertamum', field: 'insertamum',
 						formatter: (cell) => {
@@ -92,7 +92,7 @@ export default {
 						width: 120,
 						formatter: (cell) => {
 							let container = document.createElement('div');
-							container.className = "d-flex gap-2";
+							container.className = "d-flex gap-3";
 							let button = document.createElement('button');
 							button.className = 'btn btn-outline-secondary';
 							button.innerHTML = '<i class="fa fa-edit"></i>';
@@ -102,6 +102,15 @@ export default {
 
 							container.append(button);
 
+							button = document.createElement('button');
+							button.className = 'btn btn-outline-secondary';
+							button.innerHTML = '<i class="fa fa-play"></i>';
+							button.addEventListener('click', () =>
+
+								this.$refs.syncModal.start(cell.getRow().getData())
+							);
+							container.append(button);
+
 							button = document.createElement('button');
 							button.className = 'btn btn-outline-secondary';
 							button.innerHTML = '<i class="fa fa-trash"></i>';
@@ -138,6 +147,17 @@ export default {
 		openStartModal()
 		{
 			this.$refs.syncModal.openStart();
+		},
+		onSaved(studiensemester_kurzbz)
+		{
+			if (studiensemester_kurzbz && studiensemester_kurzbz !== this.studiensemester_kurzbz)
+			{
+				this.studiensemester_kurzbz = studiensemester_kurzbz;
+			}
+			else
+			{
+				this.reloadTable();
+			}
 		}
 	},
 	template: `
@@ -163,6 +183,7 @@ export default {
 							name="studiensemester_kurzbz"
 						>
 							<option :value="null" disabled>-- {{ $p.t('lehre', 'studiensemester') }} --</option>
+							<option value="all">{{ $p.t('ui', 'alleAnzeigen') }}</option>
 							<option
 								v-for="studiensemester in config.studiensemestern"
 								:key="studiensemester.studiensemester_kurzbz"
@@ -186,7 +207,7 @@ export default {
 					ref="syncModal"
 					:config="config"
 					:stsem_kurzbz="studiensemester_kurzbz"
-					@saved="reloadTable"
+					@saved="onSaved"
 					>
 				</tempus-sync-modal>
 			</template>
diff --git a/system/phrasesupdate.php b/system/phrasesupdate.php
index 138136891..e4e8023b1 100644
--- a/system/phrasesupdate.php
+++ b/system/phrasesupdate.php
@@ -39126,6 +39126,26 @@ array(
 			)
 		)
 	),
+	array(
+		'app' => 'core',
+		'category' => 'ui',
+		'phrase' => 'successStart',
+		'insertvon' => 'system',
+		'phrases' => array(
+			array(
+				'sprache' => 'German',
+				'text' => '"Erfolgreich gestartet',
+				'description' => '',
+				'insertvon' => 'system'
+			),
+			array(
+				'sprache' => 'English',
+				'text' => 'Started successfully',
+				'description' => '',
+				'insertvon' => 'system'
+			)
+		)
+	),
 	array(
 		'app' => 'core',
 		'category' => 'ui',