If a player leaves the penalty bench before his penalty is fully served, the Penalty Timekeeper shall note the time and signal the Officials who will stop play when the offending player's Team obtains possession of the puck. Google
No player may leave the players' or penalty bench at any time during an altercation or for the purpose of starting an altercation. Google
For violation of this Rule, a game misconduct penalty shall be imposed on the player who was the first or second player to leave the players' or penalty bench from either or both Teams. Google