Follow Me Groups Module Support
Just load it up on your server to begin with, you said it could be installed with a button, probably via Sofaculious i suspect.
Then create the first account, that becomes your admin account and has access to the ACP (Admin Control Panel) from there go to
ACP -> MODULES -> TOOLS -> SYSTEM CHECK
That will tell you if your server is missing anything jamroom needs. Then go to
ACP -> MODULES -> TOOLS -> PERFORMANCE CHECK
and that will tell you how well you can expect jamroom to run on your server.
Screenshot of performance and system check attached.