You can view your devices on a map.
This helps to visualize your deployment, and select certain screens based on geo locations to make changes to them.
You can Drag select or select all visible screens on the map.
For the screen to be shown up on the map, you will need to set its location.
To set the location, open Edit the screen.
Click Advance and search/type in the location.
Screen location will also be used for apps that need location such as Weather.