diff -r 828f9c9303cf -r 04503227569d src/pyams_content/shared/news/interfaces/__init__.py
--- a/src/pyams_content/shared/news/interfaces/__init__.py	Thu Mar 22 14:50:32 2018 +0100
+++ b/src/pyams_content/shared/news/interfaces/__init__.py	Thu Mar 22 14:52:22 2018 +0100
@@ -19,6 +19,7 @@
 from pyams_content.shared.common.interfaces import ISharedTool, IWfSharedContent, ISharedContent
 
 # import packages
+from zope.interface import Interface
 
 from pyams_content import _
 
@@ -31,9 +32,17 @@
     """News manager interface"""
 
 
+class INewsManagerFactory(Interface):
+    """News manager factory interface"""
+
+
 class IWfNewsEvent(IWfSharedContent):
     """News event interface"""
 
 
+class IWfNewsEventFactory(Interface):
+    """News event parent interface"""
+
+
 class INewsEvent(ISharedContent):
     """Workflow managed news event interface"""