What you actually wanna know? From my experience, the /rob system works like this: First, someone high enough level does /rob, and then he does /robinvite to people he has planned to do the robbery with. After they are all ready, they head to Blueberry Liquor Store, there's a marker behind it. Then they head inside where's another marker, if I'm right in the marker that's inside there has to be atleast 1 robber all the time, in that marker they collect the cash, and when they leave it they must survive for 10 minutes without getting killed.
There may be some errors, it may have updated from the time I did robbery last time, maybe last June or something..