How do I accept challenges in Waiting Room?

As in the title... I just don't seem to have an option to do that.

Under the old UI, it was possible to post an un-rated request, that someone could accept.  Rated requests were handled by auto-matching compatible requests.

It looks like, under the new UI, we may only have rated matches.  (If you want an un-rated game, you have to send a request to an individual).

Perhaps someone who uses the Waiting Room more than I do can answer....

EmTom, you should make a post in the waiting room.  The system will match you with someone.  As William said, the waiting room only allows rated games now.  If you want an unrated game, just invite someone.

Thanks guys.