diff --git a/src/app/pages/jitsi/jitsi.component.html b/src/app/pages/jitsi/jitsi.component.html
index fda9a22..8c9b608 100644
--- a/src/app/pages/jitsi/jitsi.component.html
+++ b/src/app/pages/jitsi/jitsi.component.html
@@ -14,13 +14,13 @@
   <ng-container matColumnDef="room">
     <th mat-header-cell *matHeaderCellDef mat-sort-header="room"> {{'jitsi.rooms.room' | i18n}} </th>
     <td mat-cell *matCellDef="let jitsiRoom">
-      <a *ngIf="open(jitsiRoom)" mat-button color="accent" href="{{ jitsiRoom.url }}" target="_blank">
+      <a *ngIf="open(jitsiRoom, false)" mat-button color="accent" href="{{ jitsiRoom.url }}" target="_blank">
         {{ jitsiRoom.room }}
         <mat-icon style="font-size: 1em;">open_in_new
         </mat-icon>
       </a>
 
-      <a *ngIf="!open(jitsiRoom)" mat-button disabled matTooltip="{{'jitsi.rooms.notStarted' | i18n}}"
+      <a *ngIf="!open(jitsiRoom, false)" mat-button disabled matTooltip="{{'jitsi.rooms.notStarted' | i18n}}"
       matTooltipPosition="above">
         {{ jitsiRoom.room }}
       </a>
@@ -33,6 +33,11 @@
     <td mat-cell *matCellDef="let jitsiRoom">{{ jitsiRoom.starts | date:datetimeformat}} </td>
   </ng-container>
 
+  <ng-container matColumnDef="moderationStarts">
+    <th mat-header-cell *matHeaderCellDef mat-sort-header="moderationStarts"> {{'jitsi.rooms.moderationStarts' | i18n}} </th>
+    <td mat-cell *matCellDef="let jitsiRoom">{{ jitsiRoom.moderationStarts | date:datetimeformat}} </td>
+  </ng-container>
+
   <ng-container matColumnDef="expires">
     <th mat-header-cell *matHeaderCellDef mat-sort-header="expires"> {{'jitsi.rooms.expires' | i18n}} </th>
     <td mat-cell *matCellDef="let jitsiRoom"> {{ jitsiRoom.expires | date:datetimeformat}} </td>
@@ -41,13 +46,13 @@
   <ng-container matColumnDef="moderationUrl">
     <th mat-header-cell *matHeaderCellDef mat-sort-header="moderationUrl"> {{'jitsi.rooms.moderationUrl' | i18n}} </th>
     <td mat-cell *matCellDef="let jitsiRoom">
-      <a *ngIf="open(jitsiRoom)" mat-button color="primary" class="url" href="{{ jitsiRoom.moderationUrl}}"
+      <a *ngIf="open(jitsiRoom, true)" mat-button color="primary" class="url" href="{{ jitsiRoom.moderationUrl}}"
         target="_blank">
         {{ jitsiRoom.moderationUrl }}
         <mat-icon style="font-size: 1em;">open_in_new</mat-icon>
       </a>
 
-      <a *ngIf="!open(jitsiRoom)" mat-button color="primary" class="url" disabled matTooltip="{{'jitsi.rooms.notStarted' | i18n}}"
+      <a *ngIf="!open(jitsiRoom, true)" mat-button color="primary" class="url" disabled matTooltip="{{'jitsi.rooms.notStarted' | i18n}}"
       matTooltipPosition="above">
         {{ jitsiRoom.moderationUrl }}
       </a>
@@ -92,6 +97,16 @@
           </mat-error>
         </mat-form-field>
 
+        <mat-form-field *ngIf="jitsiRoom.starts">
+          <input matInput [ngxMatDatetimePicker]="moderationStartsPicker" [(ngModel)]="jitsiRoom.moderationStarts" formControlName="moderationStarts"
+            placeholder="{{'jitsi.rooms.moderationStarts' | i18n}}">
+          <mat-datepicker-toggle matSuffix [for]="moderationStartsPicker"></mat-datepicker-toggle>
+          <ngx-mat-datetime-picker #moderationStartsPicker></ngx-mat-datetime-picker>
+          <mat-error>
+            {{'jitsi.rooms.error.moderationStarts' | i18n}}
+          </mat-error>
+        </mat-form-field>
+
         <mat-form-field>
           <input matInput [ngxMatDatetimePicker]="expiresPicker" [(ngModel)]="jitsiRoom.expires"
             formControlName="expires" placeholder="{{'jitsi.rooms.expires' | i18n}}">
diff --git a/src/app/pages/jitsi/jitsi.component.ts b/src/app/pages/jitsi/jitsi.component.ts
index 4d41c1c..c3ddcf9 100644
--- a/src/app/pages/jitsi/jitsi.component.ts
+++ b/src/app/pages/jitsi/jitsi.component.ts
@@ -26,7 +26,7 @@ export class JitsiComponent implements OnInit {
   working: boolean;
   datetimeformat: String;
 
-  jitsiRoomsColumns = ["share", "room", "starts", "expires", "moderationUrl", "delete"];
+  jitsiRoomsColumns = ["share", "room", "starts", "moderationStarts", "expires", "moderationUrl", "delete"];
 
   constructor(
     private quotaService: QuotaService,
@@ -41,6 +41,7 @@ export class JitsiComponent implements OnInit {
     this.form = this.formBuilder.group({
       room: ['', Validators.required],
       starts: ['', Validators.nullValidator],
+      moderationStarts: ['', Validators.nullValidator],
       expires: ['', Validators.nullValidator],
     });
 
@@ -49,6 +50,10 @@ export class JitsiComponent implements OnInit {
 
   create(): void {
     this.working = true;
+    if(!this.jitsiRoom.starts) {
+      this.jitsiRoom.moderationStarts = null;
+    }
+
     this.jitsiService.create(this.jitsiRoom).subscribe(response => {
       this.update();
       this.formDirective.resetForm();
@@ -114,6 +119,7 @@ export class JitsiComponent implements OnInit {
       switch(sort.active) {
         case 'room': return this.compare(a.room, b.room, isAsc);
         case 'starts': return this.compare(a.room, b.room, isAsc);
+        case 'moderationStarts': return this.compare(a.room, b.room, isAsc);
         case 'expires': return this.compare(a.room, b.room, isAsc);
         default: return 0;
       }
@@ -131,8 +137,8 @@ export class JitsiComponent implements OnInit {
     });
   }
 
-  open(jitsiRoom: any) {
-    return (!jitsiRoom.starts || new Date(jitsiRoom.start) < new Date()) && (!jitsiRoom.expires || new Date(jitsiRoom.expires) > new Date());
+  open(jitsiRoom: any, moderation: boolean) {
+    return (moderation || !jitsiRoom.starts || Date.parse(jitsiRoom.starts) < new Date().getTime()) && (!jitsiRoom.expires || Date.parse(jitsiRoom.expires) > new Date().getTime()) && (!moderation || (jitsiRoom.moderationStarts != null && Date.parse(jitsiRoom.moderationStarts) < new Date().getTime()));
   }
 }
 
diff --git a/src/assets/i18n/de-informal.json b/src/assets/i18n/de-informal.json
index 5dbd241..30b67be 100644
--- a/src/assets/i18n/de-informal.json
+++ b/src/assets/i18n/de-informal.json
@@ -35,13 +35,14 @@
       "delete": "Löschen",
       "error": {
         "expires": "Ungültiges Ende.",
-        "room": "Bitte gebe einen gültigen Namen an. Erlaubt sind nur Buchstaben und Zahlen.",
+        "room": "Bitte gebe einen anderen Namen an. Der Name ist schon vergeben oder enthält ungültige Zeichen. Erlaubt sind nur Buchstaben und Zahlen.",
         "starts": "Ungültiger Beginn."
       },
       "expires": "Ende",
       "info": "Du kannst hier Jitsi Räume erstellen. Die Anzahl wird über eine Quota begrenzt.",
       "left": "Du kannst noch {0} Jitsi Raum/Räume erstellen.",
       "moderationUrl": "Url für Moderation",
+      "moderationStarts" : "Beginn Moderation",
       "noQuota": "Deine Quota für Jitsi Räume ist leider aufgebraucht.",
       "notStarted" : "Die Konferenz hat noch nicht begonnen.",
       "room": "Name",
diff --git a/src/assets/i18n/en.json b/src/assets/i18n/en.json
index 7d30535..bff89c0 100644
--- a/src/assets/i18n/en.json
+++ b/src/assets/i18n/en.json
@@ -35,12 +35,13 @@
       "delete": "Delete",
       "error": {
         "expires": "Invalid expiry.",
-        "room": "Please provide a valid name. Only letters and numbers are allowed.",
+        "room": "Please choose a different name. The name is already taken or contains invalid characters. Only letters and numbers are allowed.",
         "starts": "Invalid start."
       },
       "expires": "Expires",
       "info": "You can create new Jitsi Rooms here. The number is limited due to a quota.",
       "left": "You have {0} Jitsi Room(s) left.",
+      "moderationStarts" : "Moderation starts",
       "moderationUrl": "Moderation url",
       "noQuota": "Your quota for Jitsi Rooms is depleted.",
       "notStarted" : "The conference has not started yet.",