This is another feature many have been waiting for. An increase in the number of simultaneous video streams in a meeting is supposed to be rolling out late April / Early May.
According to the road-map this will automatically be available, but the client will try to decide the best view for each user based upon media and video quality (network capability). It can be an idea to inform the users of this, so they understand why (potentially) their meetings might have 2x2 OR 3x3 video layout.
