Here's an idea you could try.... but it would require some effort on your part. Less headaches though. I run anywhere from 4-11 group therapy sessions a week. These are open groups (meaning any therapeutic topic is welcomed) with a wide variety of clients. We get people in these groups (we call them monopolizers in the clinical literautre) who have to dominate (hijack) the entire session. A couple ideas I've used have already been presented, so here's one I've had success with: I take a monopolizer aside before the group starts and I say something like, "I really appreciate all your participation. You seem to have some valuable insight (I just don't mention who the insight is or is not valuable to) and I do want to hear some of your thoughts. So, I was wondering, would you be willing to listen to the responses of others in group today, think about the overall discussion as you listen, and then come talk to me after group for 4 or 5 minutes to give me a brief synopsis of your thoughts and impressions of how you feel the discussion went and the topics we talked about." But then I have to follow at the end of the session or I undermine my credibility. And I be sure to say it in a way that is genuine and authentic. ("When it is given in a spirit of love it is received in a spirit of love.") 1) I've validated the person. 2) they are being asked a favor (in psychology, we call this "the helper's high"). 3) they know they are going to get 1-on-1 time, even if it is just for a few minutes. 4) others have been provided opportunities to participate. 5) I've avoided contention with the monopolizer. 6) I've created new possibilities for the monopolizer to choose from. The clinical literature is very adamant, and I've seen this myself, that after some time (not a week or a month, but not a year either), the monopolizer begins to modify their own behavior. I realize this is church, which is very different from therapy. Obviously, as with anything else, feel free to modify as appropriate. Hopefully this is something that might work for your situation. Good luck. Monopolizers are tasking, that's for sure.