That depends on how much you want it spread out. Twice as spread out? Day 1: Everyone flips a coin, and calls it in the air. If you called it, you publish. Day 2: You publish if you didn’t on Day 1. As long as everyone knows to do it, further communication isn’t required.
In principle they could, but it’s nontrivial amount of work (either logistical or coding).
That depends on how much you want it spread out. Twice as spread out? Day 1: Everyone flips a coin, and calls it in the air. If you called it, you publish. Day 2: You publish if you didn’t on Day 1. As long as everyone knows to do it, further communication isn’t required.