Conference Workshop Advice

Asking for advice on workshops at tech conferences. I'm one of the planners for a conference we host in Chattanooga, https://sceniccitysummit.com/. Last year we hosted our first day of workshops. It wasn't as successful as we had planned. We want to try this again for our next event that will be on June 5th, 2025. I know that you have held workshops at conferences. So I was wondering if you could give me any advice on this subject.

1. what are some ways to attract workshop teachers
2. what is the typical financial commitment with the teacher and the event
3. what is a target class size for a workshop
4. is there typically a written agreement with the teacher and the event
5. any other guidance or words of wisdom I would really appreciate any help that you could give us!