The map is configured by a file called the app-conf (app/client/public/static/app-conf.json).
As explained in the Installation instructions, you can choose to store your app-conf on Amazon s3, and update it using the Amazon CLI code described in the instructions. That way, you will not need to update the server each time you want to make a small change.
The instructions in this section are valid for both methods. I have divided them into five sections:
Layer groups and routing
Additional settings