I've not done this specifically Elaine but have a showing at the end of the month and want to run some workshops with people tackling ACE's using the outdoors so I've got a few practitioners from slightly different fields along to run the workshops. I suspect that if you went for people who work with a range of ages and across different settings for your panel you'd be fine. Might be worth throwing in a couple that could take a slightly different view to provoke discussion.