I know that as a Tournament Director you can click the "Begin Tournament" button at any time and start the ball rolling.  I know that if there is a scheduled start time, it will not start automatically when registration's full (from what I've read on here anyway).  I know that tournaments which begin "asap" will begin as soon as registration is full.

My question is this:  If a tournament is scheduled to begin "asap" is there a time limit at which point the tournament stops waiting for registration to fill up and begins with however many people are already registered?

I'm in "The Wizard Cup" tournament which was scheduled to begin "asap" and had a maximum of 100 players.  The tournament began with only 46 people registered.  Was this an automatic function?

Just curious.  Thanx.