diff --git a/source/guides/access-calendar-feeds.rst b/source/guides/access-calendar-feeds.rst
index d259bdc730d922a0c168966df59049bfb0384097..9c23f8b21a079c470ccc316d3db8d0e63c6600ad 100644
--- a/source/guides/access-calendar-feeds.rst
+++ b/source/guides/access-calendar-feeds.rst
@@ -20,7 +20,26 @@ Find the different types of calendars
 
 3.  Under "Per Resource" find all occupied slots for all resources.
 
-    -   The list of resources is configurable by your institution (TODO link to resources guide)
+    -   The list of resources is configurable by your institution 
+    
+    .. TODO::
+        
+        - link to resources guide
+
+.. admonition:: Example
+
+    The MPI for Human Development uses a two-step process for booking 
+    appointments of shared resources: 
+
+    1. A *resource committee* allocates time slots fairly across upcoming 
+       studies (in a dedicated room booking system outside of Castellum). 
+    2. Study recruiters are allowed to assign appointments within these time 
+       slots (in Castellum).
+
+    In order to check availability of a resource it is sufficient to subscribe 
+    to the "Per Resource" feed. However, to check whether it is possible to swap 
+    open slots with other studies users have to match this feed information with 
+    the external calendar view of the room booking system.
 
 Reset user tokens
 =================