At Impulse it is a requirement that we read the memo bored and check our pigeon hole thingy prior to signing on. That is subjective though. You can just rock up and stare blankly at the board for two seconds then go into a briefing. Opps! I think I have said too much :-)
We are required to do it but there is no official time we have to be there in which to do this (people say about 5 mins...). We have the internal email thing which really negates the need to look on the boards or inside your pigeon...