What kind of support group is it?
Getting the word out definitely important, so is having an established time for meetings.
If it was me, I would reserve a location, make a small informative brochure and start getting the word out.
It might even be easier to start it online to help get a group established, then find a physical location.

I have yet to go to the doctor offices. I didn't think about community centers.

Dr offices would be a great way to get the word out.
Maybe a local community center too?
I think it's great that you took the baton here 💚

Brochures have to be printed off from the arthritis foundation web site.

I have been handed the baton of the seemingly stalled fm/cfs support group. I have changed the meeting time to 7pm for those that have doctors appointments and work. I also now have business cards to give out to individuals and doctor's offices.