The NBA instituted a rule change this season in an effort to restrict the extended standing of bench gamers and coaches whereas stopping the crowding of the sideline (h/t Ira Winderman).
A staff will first obtain a warning, adopted by a delay-of-game warning. Then the staff can be penalized with a technical foul.
Groups may even be referred to as for an unsportsmanlike technical for bench gamers who enter the courtroom or make a “distracting” transfer in the direction of play.