Add globus example for multiple endpoints (#951)

source/reference/files/ondemand-d-ymls.rst

@@ -818,9 +818,21 @@ Configuration Properties
 .. _globus_endpoints:
 .. describe:: globus_endpoints (Array<Object>, null)
 
-  Add a Globus button to the file browser that opens the current directory
+  Add a Globus button to the file browser. The button opens the current directory
   in the Globus transfer web app.
 
+  In the example with multiple endpoints, suppose you use the local file browser to look at your local file system. 
+  If you were to navigate to your local ``/home`` and then click the Globus button, you would 
+  see a new tab open with the endpoint associated to that local path in the Globus interface.
+
+  If you then go back to the localfile browser and navigate to ``/project`` and then click the Globus button, 
+  you would now see the endpoint associated with that local ``/project`` directory open in the Globus interface 
+  in a new tab.
+
+  The gist here is you *navigate to the desired directory using the local filebrowser* then 
+  click the Globus button to show the corresponding endpoint in the Globus interface 
+  which opens in a new tab.
+
   Note that ``endpoint_path`` is the path that Globus will initialize to
   and is very likely to be ``/`` regardless of the actual storage path.