Well, the first thing you would have to do is choose what your conference or workshop would be about. Do you want to host something with exercise involved, or will it be more of a ‘teacher to student’ kind of thing? I think teaching parents how to get their kids active and involved would be a great idea, and maybe set up some kid-friendly and kid-safe circuits. Just make sure you get a waiver from the parents.
Will it be just once, or repeating for a week?
How much will you charge or will it be free?
Where would you like to host it?
Make sure the space you will rent is big enough. I’ve heard of a few trainers contact small studio gyms and asking to rent their space out.
Also, you need to have a game plan for marketing your workshop. You could reach out to advertising agencies or go door to door. Social media is probably your best bet though. Maybe email someone you know who has done something like this before and ask them for some more advice. Good luck to you!