Thanks sidneybruhl! awesome. I'm not quite sure how it would work with the staging and all, but it helps a lot.
So I can't remember how it works on Broadway, but when the OBC reprised their roles in LA, the actors followed the last audience speller back to their seat. It was funny because in my performance, the audience member got lost and ended up walking out of the auditorium. Jesse Tyler Ferguson paused for a bit, who was following closest behind him, and then walked right on out of the auditorium with them. The actors collapsed into laughter as soon as they left though.