Official comment

Check out the "how to" guide here:
http://support.dronesmadeeasy.com/hc/en-us/articles/207455313-Creating-a-Location-Map
This feature is called a Location Map. You can create one by going to the "Locations" entry in the navigation bar and pressing the "New Location" button.
From there, you can add whatever basemaps and layers you want by dragging the boxes with the names of the layers from the left to the right. Once they are on the right, you can shuffle the order however you would like them to be displayed as well. When finished, hit the "Save Location Map" button to be able to view it. The layers and order of them can be modified later by using the same dragging of the boxes.