During the pre-game warm-up (which shall not exceed 15 minutes in duration) and before the commencement of play in any period, each Team shall confine its activity to its own end of the Rink.
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Rule 46.10 – Fighting Prior to the Drop of the PuckThe Game Timekeeper shall be responsible for signaling the commencement and termination of the pre-game warm-up and any violation of this rule by the Players shall be reported to the Proper Authorities. 20 minutes before the time scheduled for the start of the game, both Teams shall vacate the ice and proceed to their Dressing Rooms while the ice is being flooded. Both Teams shall be signaled by the Game Timekeeper to return to the ice together in time for the scheduled start of the game.
For more information refer to DEL Regulations.