Teams are allowed to substitute any number of players on the field during timeouts

Each offensive player must establish a stationary position by the end of the timeout. Movement after this time and before the disc is checked into play is a violation. The defense has ninety seconds after the beginning of the timeout or up to twenty seconds after all offensive players have established their position (whichever is longer) to check the disc into play.

The player who had possession of the disc when the team timeout was called restarts play with a check at the pivot spot, and the marker begins the reset stall count.

If the time limits for the timeout are exceeded by one team this is called a "delay of game”. There is no warning, just the immediate penalty. and the player at the location the disc is to be put into play may self-check the disc into play without acknowledgment by the opposing team. In order to invoke this rule a player must give warnings of 20, 10, and 5 seconds.