diff --git a/src/main/java/mops/gruppen2/domain/GroupType.java b/src/main/java/mops/gruppen2/domain/GroupType.java
new file mode 100644
index 0000000..30bf9ca
--- /dev/null
+++ b/src/main/java/mops/gruppen2/domain/GroupType.java
@@ -0,0 +1,5 @@
+package mops.gruppen2.domain;
+
+public enum GroupType {
+    SIMPLE, LECTURE
+}
diff --git a/src/main/java/mops/gruppen2/domain/Visibility.java b/src/main/java/mops/gruppen2/domain/Visibility.java
new file mode 100644
index 0000000..18be67b
--- /dev/null
+++ b/src/main/java/mops/gruppen2/domain/Visibility.java
@@ -0,0 +1,5 @@
+package mops.gruppen2.domain;
+
+public enum Visibility {
+    PUBLIC, PRIVATE
+}