These may be called if the team repeatedly engages in actions that postpone resumption of play (for example, being offsides before the faceoff) or if objects are thrown onto the ice that impede the progress of the game - traditional celebratory actions such as the throwing of hats onto the ice after a player records a hat trick are usually exempt from this rule.
These rules apply when a team frequently delays resumption of play (such as being offsides before a faceoff) or when items are thrown onto the ice that obstruct gameplay. Typical celebratory actions, such as tossing hats onto the ice after achieving a hat trick, usually do not trigger these rules.