SL: SLEEPER WITHOUT A.C (72 BERTH PER COACH)
3 A: THREE TIER AIR CONDITIONED (64 BERTH PER COACH)
2 A: TWO TIER AIRCONDITIONED (48 BERTH PER COACH)
Bulk booking is permitted, above 6 persons is treated as bulk, you have to approach the CRS (chief reservation supervisor) at the advance reservation counter, you need to fill up a form and take permission from him...
more... and other procedures are as usual.