Each official is responsible for interpreting the rulebook for a different part of an ice hockey game. However, the referee always has final say in a ruling if there is a disagreement.
As an ice hockey fan, don't worry about what each of the officials do. If you're curious we will look to cover them in future ice hockey tutorials.
The referee's crease is part of the ice hockey rink we have already learned about. It's where game officials gather to discuss penalties and challenges. During play, referees skate with the flow of the game, but this is where they typically gather after a stoppage in play that needs a review.
Sometimes a referee will signal a delayed penalty by only raising his hand and not blowing his whistle. Like when calling offsides in ice hockey, officials may wait to stop play and only signal delayed offside. We'll learn more about offsides and delayed offsides next.
If player is not in control of puck, the referee raises his arm to signal a delayed penalty, but will not stop play. Once the offending player's team touches the puck, the referee will stop play and impose a penalty.
Once an official stops play, the referee will announce to everyone the reasoning behind why the penalty was called. During this announcement, the referee will make a signal with his hands to define the penalty.