Manually assigning facilitators to Zoom rooms then randomly assigning remaining participants

I am hosting a meeting with about 50 participants.  I will know only some of the participants and will not know in advance exactly who will show up. I would like to assign known individuals to facilitate the discussion in a breakout room.  Then I want remaining participants to be automatically assigned to breakout rooms. But I don't think this is possible.  The only realistic options I see are 1) randomly assign everyone then manually move the facilitators  or 2) manually assign the facilitators then manually move everyone else into rooms.