Hello,
Do you have groups that only specialized in change manager and others groups that solve incidents and request?
If the answer is yes, with some customer I'm using Alias field to filter Group field, some groups are mark with INC some others with CHG or the flag you define, and I use extra_url in the lookup to show groups depens in what kind of ticket is trying to create(Incidentes, Change Order, Problems, Request, Issue)
Regards,
Yonatan Sosa