In order to set up the Map Configuration first, you must obtain a google maps API key. To do this you will navigate to https://developers.google.com/maps.
Once you are back in Salesforce you will click the App Launcher in the top left hand of the screen. From here you will click on the ExAM Icon to launch the app.
Along the header, you will see a list of tabs. Click on More where you will see ExAM Configuration and click on it.
Within ExAM Configuration you will click on the Map Configuration tab.
In the Google Map API Key section, you will paste the API key and click Save.
You have now successfully set up the Google Maps API Key.