What a badly planned event! I've seen some that give people three hours off in the middle of the day and have an evening session. Not this one! I guess you are supposed to skip out surreptitiously and "network" on the lift.
There is an annual medical specialists conference held at Sun Peaks. All of the doctors bring their families and then spouse and the kids are the ones getting the most skiing.
I don't know if this group of docs do it but it wouldn't be too difficult to schedule late afternoon or evening lectures.