How to sign up for a workshop at Exchange 2014?

Hi,

When we registered as attendees for Progress Exchange 2014, we did not get the option to select workshops for the Monday. Or maybe we had the option but overlooked it or maybe we didn't have a clue at the time. Anyway, now I hear that most of the workshops are fully booked, and I would very much like to get a seat somewhere in a workshop, because what else can you with your time in Florida ;-)

The question is: what is the procedure to register for a workshop, for people who already registered for the conference?

Thanks, 

Jurjen Dijkstra.