When a group goes out picking, common practice is to divvy up the bounty. This tactic keeps everyone from rushing over when one person announces a find, so the group as a whole can cover more ground and stay out of each others hair.
At the end of the hunt, everyone lays his mushrooms on the ground.
Each person, in turn, picks the one he wants until theyre all gone, much like picking soccer teams.
If someone finds a really big or unusual mushroom, let him have first dibs on it.
If someone shows you a spot, dont tell others about it or bring new people there without the person who showed it to you.