Map Validator
Map Validator is a special window which will check all scene settings and show warnings if you forget to set up something. If the scene is set up correctly, it will tell you that everything is fine. You can access this window from the top Unity menu by clicking RTS Starter Kit -> Map Validator:
This window looks like this when the scene settings are correct:
Or like this if you forget to set up something:
Note
It is important to understand that it cannot detect all possible problems.