They run the exact same on other games. If you're a certain rank in Halo 2, that rank carries over to every game. You recruit exactly the same as you would for Halo 2, except meetings and practices may be different times.
Since there are very few games out there with the same structure as Halo 2 as far as sending out messages, its is VERY IMPORTANT that recruits get their information from here. So with that being said, recruits should be told to visit the forums regularly and post as often as possible on whatever they want. Also, you need to contact someone, usually the Section Leader over the squad, to let them know there is a new recruit so that the squad list can be edited and the new recruits name added.
If you have any other questions, feel free to post back in this thread or send me a Private Message on here.