Couchies, I might be speaking as a "person with lived experiences of mental health issues" to small groups of hospital staff in an event my T is organising. She said she thought very carefully and only asked 3 of us on her huge caseload.
I've also contacted potential interested people who can then contact her if they wish to participate. I have pretty bad social anxiety lol, I don't know if I'm capable. I'll be going with a friend with experience with such events (a "we go as a pair!" thing because my friend knows about my anxiety and suggested), but we'll be interacting with different groups.