diff --git a/Server/Services/EventRegistrationService.cs b/Server/Services/EventRegistrationService.cs
index a7a964f..79a4e8f 100644
--- a/Server/Services/EventRegistrationService.cs
+++ b/Server/Services/EventRegistrationService.cs
@@ -31,7 +31,17 @@ namespace SZUAbsolventenverein.Module.EventRegistration.Services
 
         public Task<Event> AddEventAsync(Event NewEvent)
         {
-            throw new System.NotImplementedException();
+            if (_userPermissions.IsAuthorized(_accessor.HttpContext.User, _alias.SiteId, EntityNames.Module, NewEvent.ModuleId, PermissionNames.Edit))
+            {
+                NewEvent = _EventRegistrationRepository.AddEventRegistration(NewEvent);
+                _logger.Log(LogLevel.Information, this, LogFunction.Create, "EventRegistration Added {NewEvent}", NewEvent);
+            }
+            else
+            {
+                _logger.Log(LogLevel.Error, this, LogFunction.Security, "Unauthorized EventRegistration Add Attempt {NewEvent}", NewEvent);
+                NewEvent = null;
+            }
+            return Task.FromResult(NewEvent);
         }
 
         public Task<Response> AddOrUpdateResponseAsync(int EventId, int ModuleId, bool ResponseType)
@@ -41,7 +51,16 @@ namespace SZUAbsolventenverein.Module.EventRegistration.Services
 
         public Task DeleteEventAsync(int EventId, int ModuleId)
         {
-            throw new System.NotImplementedException();
+            if (_userPermissions.IsAuthorized(_accessor.HttpContext.User, _alias.SiteId, EntityNames.Module, ModuleId, PermissionNames.Edit))
+            {
+                _EventRegistrationRepository.DeleteEventRegistration(EventId);
+                _logger.Log(LogLevel.Information, this, LogFunction.Delete, "EventRegistration Deleted {EventId}", EventId);
+            }
+            else
+            {
+                _logger.Log(LogLevel.Error, this, LogFunction.Security, "Unauthorized EventRegistration Delete Attempt {EventId} {ModuleId}", EventId, ModuleId);
+            }
+            return Task.CompletedTask;
         }
 
         public Task<(Event, Response)> GetEventDetails(int EventId, int ModuleId)
@@ -55,16 +74,6 @@ namespace SZUAbsolventenverein.Module.EventRegistration.Services
         }
 
         public Task<List<Event>> GetEventsAsync(int ModuleId)
-        {
-            throw new System.NotImplementedException();
-        }
-
-        public Task<Event> UpdateEventAsync(Event NewEvent)
-        {
-            throw new System.NotImplementedException();
-        }
-
-        /*public Task<List<Models.Event>> GetEventRegistrationsAsync(int ModuleId)
         {
             if (_userPermissions.IsAuthorized(_accessor.HttpContext.User, _alias.SiteId, EntityNames.Module, ModuleId, PermissionNames.View))
             {
@@ -77,6 +86,23 @@ namespace SZUAbsolventenverein.Module.EventRegistration.Services
             }
         }
 
+        public Task<Event> UpdateEventAsync(Event NewEvent)
+        {
+            if (_userPermissions.IsAuthorized(_accessor.HttpContext.User, _alias.SiteId, EntityNames.Module, NewEvent.ModuleId, PermissionNames.Edit))
+            {
+                NewEvent = _EventRegistrationRepository.UpdateEventRegistration(NewEvent);
+                _logger.Log(LogLevel.Information, this, LogFunction.Update, "EventRegistration Updated {NewEvent}", NewEvent);
+            }
+            else
+            {
+                _logger.Log(LogLevel.Error, this, LogFunction.Security, "Unauthorized EventRegistration Update Attempt {NewEvent}", NewEvent);
+                NewEvent = null;
+            }
+            return Task.FromResult(NewEvent);
+        }
+
+        /*
+
         public Task<Models.Event> GetEventRegistrationAsync(int EventRegistrationId, int ModuleId)
         {
             if (_userPermissions.IsAuthorized(_accessor.HttpContext.User, _alias.SiteId, EntityNames.Module, ModuleId, PermissionNames.View))
@@ -120,18 +146,6 @@ namespace SZUAbsolventenverein.Module.EventRegistration.Services
             return Task.FromResult(EventRegistration);
         }
 
-        public Task DeleteEventRegistrationAsync(int EventRegistrationId, int ModuleId)
-        {
-            if (_userPermissions.IsAuthorized(_accessor.HttpContext.User, _alias.SiteId, EntityNames.Module, ModuleId, PermissionNames.Edit))
-            {
-                _EventRegistrationRepository.DeleteEventRegistration(EventRegistrationId);
-                _logger.Log(LogLevel.Information, this, LogFunction.Delete, "EventRegistration Deleted {EventRegistrationId}", EventRegistrationId);
-            }
-            else
-            {
-                _logger.Log(LogLevel.Error, this, LogFunction.Security, "Unauthorized EventRegistration Delete Attempt {EventRegistrationId} {ModuleId}", EventRegistrationId, ModuleId);
-            }
-            return Task.CompletedTask;
         }*/
     }
 }