diff --git a/application/WorkorderAdmin/WorkorderAdminController.php b/application/WorkorderAdmin/WorkorderAdminController.php
index 40259cb0b..22bea34b5 100644
--- a/application/WorkorderAdmin/WorkorderAdminController.php
+++ b/application/WorkorderAdmin/WorkorderAdminController.php
@@ -342,5 +342,60 @@ class WorkorderAdminController extends WorkorderBaseController
 
         self::returnJson(['success' => true, 'message' => 'Status erfolgreich auf "Zugewiesen" zurückgesetzt.']);
     }
+
+    protected function scheduleAppointmentAction()
+    {
+        if (empty($this->postData['workorderId']) || empty($this->postData['appointmentDate'])) self::sendError("Erforderliche Felder fehlen.");
+        $workorder = WorkorderModel::get($this->postData['workorderId']);
+        if (!$workorder) self::sendError("Arbeitsauftrag nicht gefunden.");
+        if ((int)date('H', $this->postData['appointmentDate']) >= 23 || (int)date('H', $this->postData['appointmentDate']) < 1) self::sendError("Bitte geben Sie eine Uhrzeit an!");
+
+        $workorder->appointmentDate = $this->postData['appointmentDate'];
+        $workorder->status = 'scheduled';
+        WorkorderModel::update((array)$workorder);
+
+        WorkorderJournalModel::create([
+            'workorderId' => $workorder->id, 'text' => 'Termin festgelegt auf: ' . date('d.m.Y H:i', $this->postData['appointmentDate']),
+            'create' => time(), 'createBy' => $this->user->id,
+        ]);
+        self::returnJson(['success' => true, 'message' => 'Termin erfolgreich gespeichert.']);
+    }
+
+    protected function rescheduleAppointmentAction()
+    {
+        if (empty($this->postData['workorderId']) || empty($this->postData['appointmentDate']) || empty($this->postData['reason'])) self::sendError("Erforderliche Felder fehlen.");
+        $workorder = WorkorderModel::get($this->postData['workorderId']);
+        if (!$workorder) self::sendError("Arbeitsauftrag nicht gefunden.");
+        if ((int)date('H', $this->postData['appointmentDate']) >= 23 || (int)date('H', $this->postData['appointmentDate']) < 1) self::sendError("Bitte geben Sie eine Uhrzeit an!");
+
+        $oldDateFormatted = $workorder->appointmentDate ? date('d.m.Y H:i', $workorder->appointmentDate) : 'N/A';
+        $newDateFormatted = date('d.m.Y H:i', $this->postData['appointmentDate']);
+        $workorder->appointmentDate = $this->postData['appointmentDate'];
+        WorkorderModel::update((array)$workorder);
+
+        WorkorderJournalModel::create([
+            'workorderId' => $workorder->id, 'text' => "Termin verschoben von {$oldDateFormatted} auf {$newDateFormatted}. Grund: " . $this->postData['reason'],
+            'create' => time(), 'createBy' => $this->user->id,
+        ]);
+        self::returnJson(['success' => true, 'message' => 'Termin erfolgreich verschoben.']);
+    }
+
+    protected function clearAppointmentAction()
+    {
+        if (empty($this->postData['workorderId'])) self::sendError("Arbeitsauftrags-ID fehlt.");
+        $workorder = WorkorderModel::get($this->postData['workorderId']);
+        if (!$workorder) self::sendError("Arbeitsauftrag nicht gefunden.");
+
+        $oldDateFormatted = $workorder->appointmentDate ? date('d.m.Y H:i', $workorder->appointmentDate) : 'N/A';
+        $workorder->appointmentDate = null;
+        $workorder->status = 'assigned';
+        WorkorderModel::update((array)$workorder);
+
+        WorkorderJournalModel::create([
+            'workorderId' => $workorder->id, 'text' => "Termin gelöscht (war: {$oldDateFormatted}).",
+            'create' => time(), 'createBy' => $this->user->id,
+        ]);
+        self::returnJson(['success' => true, 'message' => 'Termin erfolgreich gelöscht.']);
+    }
     //endregion
 }
\ No newline at end of file
diff --git a/public/js/pages/WorkorderAdmin/WorkorderAdmin.js b/public/js/pages/WorkorderAdmin/WorkorderAdmin.js
index 6223ff0d1..ceb4eaa24 100644
--- a/public/js/pages/WorkorderAdmin/WorkorderAdmin.js
+++ b/public/js/pages/WorkorderAdmin/WorkorderAdmin.js
@@ -90,7 +90,23 @@ Vue.component('workorder-admin', {
             </div>
           </template>
 
-          <template v-slot:appointmentdate="{ row }">{{ formatDate(row.appointmentDate, true) }}</template>
+          <template v-slot:appointmentdate="{ row }">
+            <div v-if="!row.appointmentDate && ['new', 'assigned', 'scheduled', 'correction_requested', 'problem_solved', 'civil_engineering_completed'].includes(row.status)">
+              <tt-date-picker placeholder="Termin festlegen..." :date-range="false"
+                              @input="setAppointment(row, $event)" sm no-form-group
+                              :additional-props="{ timePicker: true, timePicker24Hour: true, locale: { format: 'DD.MM.YYYY HH:mm' }, drops: 'up' }"/>
+            </div>
+            <div v-else-if="row.appointmentDate">
+              <span>{{ formatDate(row.appointmentDate, true) }}</span>
+              <tt-button v-if="!['completed', 'cancelled', 'documented', 'charged', 'archived'].includes(row.status)"
+                         icon="fas fa-edit" @click="openRescheduleModal(row)"
+                         additional-class="btn-link btn-sm p-0 ml-2" title="Termin ändern"/>
+              <tt-button v-if="!['completed', 'cancelled', 'documented', 'charged', 'archived'].includes(row.status)"
+                         icon="fas fa-times" @click="clearAppointment(row)"
+                         additional-class="btn-link btn-sm p-0 ml-1 text-danger" title="Termin löschen"/>
+            </div>
+            <span v-else>–</span>
+          </template>
 
           <template v-slot:expandedRow="{ row }">
             <civil-engineering-manager v-if="row.status === 'civil_engineering_required'" :workorder-id="row.id" :is-admin="true" class="mb-3"/>
@@ -120,13 +136,20 @@ Vue.component('workorder-admin', {
           <tt-date-picker label="Deadline" v-model="massAssignModalData.deadline" :date-range="false" sm row/>
         </tt-modal>
 
+        <tt-modal v-if="rescheduleModalData" :show.sync="rescheduleModalData" title="Termin verschieben" @submit="rescheduleAppointment">
+          <p><strong>Auftrag:</strong> #{{ rescheduleModalData.workorder.id }}</p>
+          <tt-date-picker label="Neuer Termin" :date-range="false" v-model="rescheduleModalData.newDate"
+                          :additional-props="{ timePicker: true, timePicker24Hour: true, locale: { format: 'DD.MM.YYYY HH:mm' }, singleDatePicker: true }" sm row/>
+          <tt-textarea label="Grund" v-model="rescheduleModalData.reason" sm row required/>
+        </tt-modal>
+
       </tt-card>
     `,
     data() {
         return {
             window, workordersToAssign: [], editingWorkorderId: null, editingDeadlineId: null, editingAdditionalInfoId: null,
             civilEngineeringData: null, tempAdditionalInfo: '', expandedNotes: [], companiesByTenant: {}, companiesLoading: false, massAssignCompanyId: null,
-            cancelWorkorderModalData: null, problemSolvedModalData: null, massAssignModalData: null,
+            cancelWorkorderModalData: null, problemSolvedModalData: null, massAssignModalData: null, rescheduleModalData: null,
             crudConfig: {
                 ...window.TT_CONFIG.CRUD_CONFIG, selectable: false, expandable: true,
                 customRowClass: (row) => {
@@ -321,6 +344,98 @@ Vue.component('workorder-admin', {
                 this.$refs.table.$refs.table.refreshTable();
                 this.cancelWorkorderModalData = null;
             } else window.notify('error', data.message || 'Stornierung fehlgeschlagen.');
+        },
+        getCalendarType(networkOwnerName) {
+            if (!networkOwnerName) return '1';
+            const name = networkOwnerName.toLowerCase();
+            if (name.includes('xinon')) return '2';
+            if (name.includes('sbidi')) return '7';
+            if (name.includes('estmk')) return '3';
+            return '1';
+        },
+        getCampaignName(preordercampaignId) {
+            const col = this.crudConfig.columns.find(c => c.key === 'preordercampaign_id');
+            const opt = col?.table?.filterOptions?.find(o => o.value == preordercampaignId);
+            return opt?.text || '';
+        },
+        openCalendarWithPrefill(workorder, dateUnix, win) {
+            const m = window.moment.unix(dateUnix);
+            const zeitraum = m.hour() < 12 ? 'VM' : 'NM';
+            const campaignName = this.getCampaignName(workorder.preordercampaign_id);
+            const locationParts = [workorder.street, workorder.hausnummer];
+            if (workorder.stiege) locationParts.push('/' + workorder.stiege);
+            const location = locationParts.join(' ') + ', ' + workorder.plz + ' ' + workorder.city;
+            const descLines = [];
+            if (workorder.oaid || campaignName || workorder.city) {
+                descLines.push([workorder.oaid, campaignName, workorder.city].filter(Boolean).join(' - '));
+            }
+            descLines.push('Zeitraum: ' + zeitraum);
+            if (workorder.phone) descLines.push('Tel.: ' + workorder.phone);
+            if (workorder.additionalInfo) descLines.push(workorder.additionalInfo);
+            const calendarData = {
+                type: this.getCalendarType(workorder.networkOwnerName),
+                subject: workorder.customerCompany || workorder.customerName || '',
+                location: location,
+                cstart: m.format('DD.MM.YYYY HH:mm'),
+                cend: m.clone().add(90, 'minutes').format('DD.MM.YYYY HH:mm'),
+                description: descLines.join('<br>'),
+                customer_phone: workorder.phone || null,
+                customer_email: workorder.email || null,
+                calendar_user_name: 'Pusnik',
+                attendee_names: ['Ziga Harc'],
+            };
+            localStorage.setItem('Calendar_create', JSON.stringify(calendarData));
+            win.location.href = '/Calendar/View';
+        },
+        async setAppointment(workorder, date) {
+            if (!date) return;
+            if (moment.unix(date).hour() >= 23 || moment.unix(date).hour() < 1) {
+                this.$refs.table.$refs.table.refreshTable();
+                return window.notify('error', 'Bitte Uhrzeit angeben!');
+            }
+            const calWin = window.open('about:blank', '_blank');
+            const {data} = await axios.post(`${window.TT_CONFIG.BASE_PATH}/WorkorderAdmin/scheduleAppointment`, {
+                workorderId: workorder.id, appointmentDate: date
+            });
+            if (data.success) {
+                window.notify('success', data.message);
+                this.$refs.table.$refs.table.refreshTable();
+                this.openCalendarWithPrefill(workorder, date, calWin);
+            } else {
+                if (calWin) calWin.close();
+                window.notify('error', data.message || 'Ein Fehler ist aufgetreten.');
+            }
+        },
+        openRescheduleModal(row) {
+            this.rescheduleModalData = { workorder: row, newDate: row.appointmentDate, reason: '' };
+        },
+        async rescheduleAppointment() {
+            const { workorder, newDate, reason } = this.rescheduleModalData;
+            if (!newDate || !reason) return window.notify('error', 'Bitte geben Sie ein neues Datum und einen Grund an.');
+            if (moment.unix(newDate).hour() >= 23 || moment.unix(newDate).hour() < 1) return window.notify('error', 'Bitte Uhrzeit angeben!');
+            const calWin = window.open('about:blank', '_blank');
+            const {data} = await axios.post(`${window.TT_CONFIG.BASE_PATH}/WorkorderAdmin/rescheduleAppointment`, {
+                workorderId: workorder.id, appointmentDate: newDate, reason: reason
+            });
+            if (data.success) {
+                window.notify('success', data.message);
+                this.$refs.table.$refs.table.refreshTable();
+                this.openCalendarWithPrefill(workorder, newDate, calWin);
+                this.rescheduleModalData = null;
+            } else {
+                if (calWin) calWin.close();
+                window.notify('error', data.message || 'Ein Fehler ist aufgetreten.');
+            }
+        },
+        async clearAppointment(workorder) {
+            if (!confirm('Möchten Sie den Termin wirklich löschen?')) return;
+            const {data} = await axios.post(`${window.TT_CONFIG.BASE_PATH}/WorkorderAdmin/clearAppointment`, {
+                workorderId: workorder.id
+            });
+            if (data.success) {
+                window.notify('success', data.message);
+                this.$refs.table.$refs.table.refreshTable();
+            } else window.notify('error', data.message || 'Ein Fehler ist aufgetreten.');
         }
     },
     watch: {