diff --git a/DataCenter_Windows/WindowsDataCenter/Interfaces/IRepository.cs b/DataCenter_Windows/WindowsDataCenter/Interfaces/IRepository.cs
index 6600e0f..bdd3acf 100644
--- a/DataCenter_Windows/WindowsDataCenter/Interfaces/IRepository.cs
+++ b/DataCenter_Windows/WindowsDataCenter/Interfaces/IRepository.cs
@@ -102,5 +102,9 @@ namespace Interfaces
         Group GetGroup(int groupId);
         OperationResponse UpdateGroup(Group group);
         OperationResponse DeleteGroup(int groupId);
+
+        OperationResponse DeleteLog(TimeLog log);
+        OperationResponse CreateLog(TimeLog log);
+        OperationResponse UpdateLog(TimeLog log);
     }
 }