Board Thread:General Discussion/@comment-25370154-20140925095245/@comment-25142096-20141001200439

I think that it will be system that will let you restrict your own room to players of your same rank (not the player rating). For example, if you're at the Captain rank, only other Captains will be able to get in, so that you're sure all the players have the same level of unlocks (rather than skill).

That's what I understood at least. A "beginner" room would be one of those rooms restricted to the low ranks, for example a Warrant Officer-only room will be restricted to new players.