NCAA Flag Rule 11
The Officials: Jurisdiction and Duties
ARTICLE 1. The officials’ jurisdiction begins 30 minutes before the scheduled start and ends when the referee declares the score final. It is expected that all officials will be on the field 30 minutes prior to the game start time.
ARTICLE 2. At 30 minutes before the start of the game, the playing field will be divided in half, with a buffer zone of 10-yards between the 35 yard-lines in which no player shall enter.
SECTION 2. RESPONSIBILITIES
ARTICLE 1. The game shall be played under supervision of three, four, or five game officials.
ARTICLE 2. Officiating responsibilities and mechanics are specified in the current mechanics set forth by this advisory board. Officials are responsible for knowing and applying the materials.