diff --git a/shiftregister/app/dynamic_preferences_registry.py b/shiftregister/app/dynamic_preferences_registry.py
index af4912e..456a121 100644
--- a/shiftregister/app/dynamic_preferences_registry.py
+++ b/shiftregister/app/dynamic_preferences_registry.py
@@ -1,17 +1,38 @@
 from dynamic_preferences.registries import global_preferences_registry
-from dynamic_preferences.types import MultipleChoicePreference
-from dynamic_preferences.types import Section
+from dynamic_preferences import types
 import phonenumbers
+import datetime
 
-registration = Section("registation")
+helper = types.Section("helper")
 
 
 @global_preferences_registry.register
-class AllowedPhoneCountries(MultipleChoicePreference):
-    section = registration
+class AllowedPhoneCountries(types.MultipleChoicePreference):
+    section = helper
     name = "allowed_countries"
     choices = [
         (f"{phonenumbers.country_code_for_region(cc)}", cc)
         for cc in phonenumbers.SUPPORTED_REGIONS
     ]
     default = [49, 41, 43]
+
+
+@global_preferences_registry.register
+class SendSMS(types.BooleanPreference):
+    section = helper
+    name = "send_sms"
+    default = True
+
+
+@global_preferences_registry.register
+class ShiftReminder(types.DurationPreference):
+    section = helper
+    name = "reminder_time"
+    default = datetime.timedelta(minutes=30)
+
+
+@global_preferences_registry.register
+class CancelMin(types.DurationPreference):
+    section = helper
+    name = "min_cancel_time"
+    default = datetime.timedelta(hours=6)
diff --git a/shiftregister/app/forms.py b/shiftregister/app/forms.py
index ff3e3c4..c40d95b 100644
--- a/shiftregister/app/forms.py
+++ b/shiftregister/app/forms.py
@@ -17,10 +17,7 @@ def text_input(type=None):
 
 
 def validate_allowed_countries(value):
-    if (
-        not f"{value.country_code}"
-        in global_preferences["registation__allowed_countries"]
-    ):
+    if not f"{value.country_code}" in global_preferences["helper__allowed_countries"]:
         raise ValidationError(
             "Vorwahl nicht Erlaubt, bitte wende dich an den Infodesk oder schicke uns eine Mail"
         )
diff --git a/shiftregister/app/models.py b/shiftregister/app/models.py
index 6785efe..f321714 100644
--- a/shiftregister/app/models.py
+++ b/shiftregister/app/models.py
@@ -5,6 +5,9 @@ from datetime import timedelta
 from django.utils import timezone
 from django.db.models import F, Count, Q, ExpressionWrapper
 from phonenumber_field.modelfields import PhoneNumberField
+from dynamic_preferences.registries import global_preferences_registry
+
+global_preferences = global_preferences_registry.manager()
 
 
 class Room(models.Model):
@@ -73,7 +76,9 @@ class ShiftRegistration(models.Model):
     reminder_sent = models.BooleanField(default=False)
 
     def can_cancel(self):
-        return self.shift.start_at > (timezone.now() + timedelta(hours=4))
+        return self.shift.start_at > (
+            timezone.now() + global_preferences["helper__min_cancel_time"],
+        )
 
     def send_reminder(self):
         text = f"Deine Kontakt-Schicht begint um {self.shift.start_at.strftime('%H:%M')}, bitte komme eine halbe Stunde vorher an den Infopoint."
@@ -85,7 +90,8 @@ class ShiftRegistration(models.Model):
     def get_unnotified_registrations():
         return ShiftRegistration.objects.filter(
             reminder_sent=False,
-            shift__start_at__lte=timezone.now() + timedelta(minutes=60),
+            shift__start_at__lte=timezone.now()
+            + global_preferences["helper__reminder_time"],
         )
 
     def __str__(self):