In hockey, the referees and officials are responsible for interpreting the rulebook for a different part of the game. The referee always has final say in a ruling if there is a disagreement.
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.
In hockey, there are many types of referees and officials.
Yes, this is called a coach's challenge.