I don't know... Since this is not a program that I have ever used.
According to the site starting the service should start the configuration window:
https://cumuluswiki.org/a/Setup
Here is a link to the Cumulus Forum:
https://cumulus.hosiene.co.uk/index.php?sid=b970719bf565ebdc3178da0b6a8533f1
This site may be far more helpful to you, not just in existing information to search, but as it is populated with experienced users.