diff --git a/src/Bundle/ChillCalendarBundle/Controller/CalendarController.php b/src/Bundle/ChillCalendarBundle/Controller/CalendarController.php
index 37208c754..d036b6b1e 100644
--- a/src/Bundle/ChillCalendarBundle/Controller/CalendarController.php
+++ b/src/Bundle/ChillCalendarBundle/Controller/CalendarController.php
@@ -37,6 +37,7 @@ use Psr\Log\LoggerInterface;
 use Symfony\Bundle\FrameworkBundle\Controller\AbstractController;
 use Symfony\Component\Form\Extension\Core\Type\SubmitType;
 use Symfony\Component\Form\Form;
+use Symfony\Component\Form\FormFactoryInterface;
 use Symfony\Component\Form\FormInterface;
 use Symfony\Component\HttpFoundation\RedirectResponse;
 use Symfony\Component\HttpFoundation\Request;
@@ -122,22 +123,32 @@ class CalendarController extends AbstractController
 
         [$person, $accompanyingPeriod] = [$calendar->getPerson(), $calendar->getAccompanyingPeriod()];
 
+        $form = $this->createForm(CancelType::class, $calendar);
+
         if ($accompanyingPeriod instanceof AccompanyingPeriod) {
             $view = '@ChillCalendar/Calendar/cancelCalendarByAccompanyingCourse.html.twig';
-//            $redirectRoute = $this->generateUrl('chill_calendar_calendar_list_by_period', ['id' => $accompanyingPeriod->getId()]);
+            $redirectRoute = $this->generateUrl('chill_calendar_calendar_list_by_period', ['id' => $accompanyingPeriod->getId()]);
         } elseif ($person instanceof Person) {
             $view = '@ChillCalendar/Calendar/cancelCalendarByPerson.html.twig';
-//            $redirectRoute = $this->generateUrl('chill_calendar_calendar_list_by_person', ['id' => $person->getId()]);
+            $redirectRoute = $this->generateUrl('chill_calendar_calendar_list_by_person', ['id' => $person->getId()]);
         } else {
             throw new \RuntimeException('nor person or accompanying period');
         }
 
-        // Cancellation form
+        $form->handleRequest($request);
 
+        if ($form->isSubmitted() && $form->isValid()) {
+            $this->em->persist($calendar);
+            $this->em->flush();
+
+            $this->addFlash('success', $this->translator->trans('calender.calendar item has been canceled!'));
+
+            return new RedirectResponse($redirectRoute);
+        }
 
         return $this->render($view, [
             'calendar' => $calendar,
-//            'delete_form' => $form->createView(),
+            'form' => $form->createView(),
             'accompanyingCourse' => $accompanyingPeriod,
             'person' => $person,
         ]);
diff --git a/src/Bundle/ChillCalendarBundle/Form/CancelType.php b/src/Bundle/ChillCalendarBundle/Form/CancelType.php
index ad41a6105..f3a45968a 100644
--- a/src/Bundle/ChillCalendarBundle/Form/CancelType.php
+++ b/src/Bundle/ChillCalendarBundle/Form/CancelType.php
@@ -21,15 +21,19 @@ use Symfony\Component\OptionsResolver\OptionsResolver;
 
 class CancelType extends AbstractType
 {
-    public function __construct(private readonly TranslatableStringHelperInterface $translatableStringHelper) {}
+    public function __construct(private readonly TranslatableStringHelperInterface $translatableStringHelper)
+    {
+    }
 
     public function buildForm(FormBuilderInterface $builder, array $options)
     {
-        $builder->add('cancelReason', EntityType::class, [
+        $builder->add('cancelReason', EntityType::class, array(
             'class' => CancelReason::class,
-            'required' => true,
-            'choice_label' => fn (CancelReason $cancelReason) => $this->translatableStringHelper->localize($cancelReason->getName()),
-        ]);
+            'required' => false,
+            'choice_label' => function (CancelReason $cancelReason) {
+                return $this->translatableStringHelper->localize($cancelReason->getName());
+            },
+        ));
     }
 
     public function configureOptions(OptionsResolver $resolver)
diff --git a/src/Bundle/ChillCalendarBundle/Resources/views/Calendar/cancelCalendarByAccompanyingCourse.html.twig b/src/Bundle/ChillCalendarBundle/Resources/views/Calendar/cancelCalendarByAccompanyingCourse.html.twig
index 19659c627..10841bf9f 100644
--- a/src/Bundle/ChillCalendarBundle/Resources/views/Calendar/cancelCalendarByAccompanyingCourse.html.twig
+++ b/src/Bundle/ChillCalendarBundle/Resources/views/Calendar/cancelCalendarByAccompanyingCourse.html.twig
@@ -3,3 +3,20 @@
 {% set activeRouteKey = 'chill_calendar_calendar_list' %}
 
 {% block title  'chill_calendar.cancel_calendar_item'|trans %}
+
+{% block content %}
+
+    {{ form(form) }}
+
+    <ul class="record_actions sticky-form-buttons">
+        <li class="cancel">
+            <a
+                class="btn btn-cancel"
+                href="{{ chill_return_path_or('chill_calendar_calendar_list_by_period', { 'id': accompanyingCourse.id } )}}"
+            >
+                {{ 'Cancel'|trans|chill_return_path_label }}
+            </a>
+        </li>
+    </ul>
+
+{% endblock %}
diff --git a/src/Bundle/ChillCalendarBundle/Resources/views/Calendar/cancelCalendarByPerson.html.twig b/src/Bundle/ChillCalendarBundle/Resources/views/Calendar/cancelCalendarByPerson.html.twig
index b3db97e0f..867a5b548 100644
--- a/src/Bundle/ChillCalendarBundle/Resources/views/Calendar/cancelCalendarByPerson.html.twig
+++ b/src/Bundle/ChillCalendarBundle/Resources/views/Calendar/cancelCalendarByPerson.html.twig
@@ -3,3 +3,20 @@
 {% set activeRouteKey = 'chill_calendar_calendar_list' %}
 
 {% block title  'chill_calendar.cancel_calendar_item'|trans %}
+
+{% block content %}
+
+    {{ form_row(form.cancelReason) }}
+
+    <ul class="record_actions sticky-form-buttons">
+        <li class="save">
+            <a
+                class="btn btn-save"
+                href="{{ chill_return_path_or('chill_calendar_calendar_list', { 'id': person.id } )}}"
+            >
+                {{ 'Cancel'|trans|chill_return_path_label }}
+            </a>
+        </li>
+    </ul>
+
+{% endblock %}