It is the same process. The only difference is they may ask you in the interview what you liked about your previous role and your overall experience. Also if you have a restricted rehire status you may need to do some additional paperwork. But if your record card was clean you shouldn't need to worry about it. As for role requests, its the same as it was the first time, you interview for your top few. If you have a location request you can make it at the time of the interview but that doesn't mean you will get that location.