How can we improve WHMCS?

Hi.

I need that cron daily reviews the number of active hosting services (not domains) that each client has and, depending on the number of active services that the client has, assign it to one group or another. Example: if a client has up to 10 active services designate it to group 1, if a client has up to 20 active services designate it to group 2, etc. With daily update through cron.

Thanks a lot.