diff --git a/src/graph_ZCA/interfaces.py b/src/graph_ZCA/interfaces.py
--- a/src/graph_ZCA/interfaces.py
+++ b/src/graph_ZCA/interfaces.py
@@ -16,6 +16,16 @@ class IBaseComponent(Interface):
     All Interfaces derived from this class are marking a Class to be a component of this framework.
     """
 
+    def addItem(self, item):
+        """
+        Add a sub component
+        """
+
+    def setup(self, *args, **kwargs):
+        """
+        Set parameters and bring the component to live
+        """
+
 class IAxis(IBaseComponent):
     """
     Axis interface