There isn't much to say, really. When you are on a floor, you are on a floor. When you leave that floor, you are on another floor. It's common sense.
((OOC - Roleplay in specific forums. When leaving to another floor, say so on the floor you are on, then continue on desired floor. There is no need to post in the floors you pass on the way up if you don't want to. I might add more here later. -.-))