Multiple simultaneous action conflict resolution

Image a multiplayer game. Turns are simultaneous. Players move their pieces about a (relatively small) board in accordance with the current game phase. each player may have half a dozen or so pieces to move on the board in each game phase. Two player pieces may not occupy the same location. This poses two questions:

1) How to resolve when two players want to move their pieces to the same location at the same time?

2) How to resolve multiple simultaneous conflicts in which not only do multiple players have multiple discrete conflicts, but each player has a different desired order in which they want those multiple conflicts resolved? eg If Bubba wins that conflict then I really want to win this conflict, but if Boffo wins this other fight then I absolutely have to win this conflict but otherwise I really don’t care etc.

There are several classic resolutions such as Zoosim’s flag/precedence hierarchy and Roads & Boats similar system along with resolution order dictation etc for the first question. I don’t know of methods that specifically address the multiple simultaneous conflict order resolution problem (tho Roads & Boats makes a nod in that direction).

Ideas?