step 1 and step 2 are back to back play, then after that you can unregister as long as the tournament you just finished hasn't just filled up with the players from the tourney you just finished then the third will start automatically also.
I have been to step 4 three times and the first step 5 once, notice I said first step 5. if you open up each lobby to the next tourney then you will see that there are 2 step 5/5's why they did this I don't know but I won my step 5/5 seat which was a 200.00 buy in ticket only to find out that there was another 5/5 for 600.00 buy in that kind of upset me because I wasn't expecting it and it screwed with my and head and you will have to wait for these tournaments to fill up before you can start playing I waited 3 days on a step for to fill up. and to register and then wait and wait then I would unregister and try again the next day. just remember the farther you get along the tighter everyone plays so don't expect that AJos to hold up, most players don't even try to get in a pot unless they are holding a pocket pair. Good luck on the tables!