Line change procedure: visitors first, then home

NFHS gives the home team the last change, and the referee runs the timing with hand signals. Once the referee points to where the faceoff will be, the visitors get a five-second window to change. Then the referee raises a hand toward the visiting bench, which opens a five-second window for the home team. Lowering that hand cues a short whistle from the official with the puck, who drops it within five seconds. Deliberately stalling a change earns one warning that covers the whole game; the next deliberate stall is a minor, served by a player the captain picks. Once the change is done, no further changes are allowed before the puck drops unless a penalty is called.