The way our NOC does it is: - alternating between 3 and 4 days per week - 12 hours per day - two people per shift This makes for an average of 42 hours per week and a four shifts of two people, or a staff of eight. Keeping a ringer in the rotation is probably not a bad idea either, and of course fnord! a manager is needed, bringing the total to ten. This is not my department, so I'm not the expert I pretend to be. -- "I always drive properly. A bit fast, perhaps, but always with consummate skill and a natural feel for the road that even cops recognize. No cop was ever born who isn't a sucker for a finely-executed hi-speed Controlled Drift all the way around one of those cloverleaf freeway interchanges." -- HST