ADHD Small Group + a Coach

I'd like a small group with strict/well-defined meeting times that has a coach/conversation-conductor to keep topics on track. I feel like it would work really well if advice was given/received by others with ADHD, while having a leader do stuff like

• make sure 1 person doesn't dominate the conversation
• keep meeting notes
• call/text people who miss a meeting
• follow up with people who said they were going to do something

But I've never really heard of such a system.

I've found at least two online services, but I don't really know if they're worth trying. I'm curious on your opinion and/or if any of you have tried something similar.

There's "Study Hall" which I'm not sure is what I'm really looking for https://adult-study-hall-by-adhd-rewired.mn.co/sign_up?plan_id=230880

Then this site seems to have good coaching https://news.ycombinator.com/item?id=37252231