diff --git a/ReportImp/AachenerLaienhelfer/Service/CustomGroupDurationCalculator.cs b/ReportImp/AachenerLaienhelfer/Service/CustomGroupDurationCalculator.cs
new file mode 100644
index 000000000..c41eb18eb
--- /dev/null
+++ b/ReportImp/AachenerLaienhelfer/Service/CustomGroupDurationCalculator.cs
@@ -0,0 +1,23 @@
+using BeWo.Service.Plugins;
+using BS.Shared.DataContracts;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AachenerLaienhelfer.Service
+{
+    public class CustomGroupDurationCalculator : GroupDurationCalculator
+    {
+		public override GroupDurationDC CalculateGroupDuration(int personCount, int employeeCount, decimal totalDuration,
+			long[] costBearer2SupportConceptArray)
+		{
+			var gd = new GroupDurationDC();
+			gd.SingleDuration = totalDuration / personCount;
+			gd.TotalDuration = totalDuration;
+
+			return gd;
+		}
+	}
+}