I've not yet had an opportunity to do therapy & TBH, the group part tends to fire up a certain amount of my social anxiety - that said, insomuch as I may relate to traits & experiences of others in the group, I'd probably try to help with whatever I've learned from my own journey. That & realizing that my own experiences are likely shared with others could be quite cathartic. Initially, I'd almost certainly just sit & observe, until I decided how things felt to me.

Aside from the social anxiety bit, I also wonder if I might end up helping others to avoid dealing with my own stuff. I might also be a bit prone to finding myself overwhelmed by hearing others experiences & backing away.