I am building a directory of Volunteers serving around the world. Each volunteer belongs to both a Sending Organization and is placed at a Receiving Site. I have successfully created post relations between Volunteers – Sending Organization as well as Volunteers – Receiving Site.

I am trying now to create an Archive page that will show where all the Volunteers are serving around the world (Receiving Sites). However, when I create the Archive page, the Volunteers are shown in the Post Feed but there are no map markers on the assocated map.

How does the map know to look at the location information for the Receiving Site?