Over the past several years I've worked on a suite of reserved seating products. The latest of which is manage section. Where an event organizer can, in real time, watch how their event is selling. They can also do things like transfer an attendee from one seat to another, or release some seats that were held from being on sale to the public.
The other two parts are Seat Designer: A self service seatmap creator, an Pick a Seat: A consumer facing seat selection interface.