Normally 3 pcs connected to projectors normally screening 3 different routes - giving advice and help for MSTS and now RS. Along side which is a DCC workshop where help and advice about DCC locomotives is given. They are a friendly bunch and you can pick up one of the community CDs free of charge there.
I normally help out on the Northern shows and have a great time - I'd been running the sim for afew years and this year in Glasgow finally managed to master driving a steam loco

(well stopping one actually)
Go down and enjoy yourself you may even get chance to drive one.