Only registered trained/certified referees are used on futsal games hosted by the North Alabama FUTSAL League.
Game lengths, ball sizes, other division distinguishing factors and referee & timer pay:
USFF Referee Report Template (for ejections, injuries, and unusual incidents)
Portable Scoreboard Operations Manual
USFF Referee Administrative Handbook
Annual Referee Registration with USFF Detailed Instructions
Annual Referee Recertification with USYF via USSF