Can&#x27;t you just have a card on everyone&#x27;s desk. One side is green, one side is red. If you put the red side  up, it means do not disturb? I don&#x27;t mean this in any way as a personal attack on you, but tech culture in general sometimes gets too focused on using technology instead of just finding a solution that works. Sometimes it&#x27;s good to take a step back and ask again what the goal is.