What does it mean to be the "host" of an expanded housing room?

I was placed into expanded housing and it says I am the “host” and was wondering what that means and how that may or may not affect my chances of getting moved to regular housing as soon as possible.

Being the host of expanded housing means that you will not be moved to a different room, you will stay in the same room. One of your roommates, who is not the host, will be the one that gets moved to a new room when a space becomes available.