Noob question: when tracking position in a score, how often does shifting then independently of rolls come up?

Noob question: when tracking position in a score, how often does shifting then independently of rolls come up?

Noob question: when tracking position in a score, how often does shifting then independently of rolls come up? In other words, once a base position is set, is shifting it in the hands of the GM (based on consequences of rolls) or players (based on Devil’s Bargains or trading for effect), or is GM fiat still something to consider?

This probably seems like a really silly question, but I want to understand a proper way to run things. It seems to me that the spirit of the rules indicate that the position should flow from rolls and choices, because these are things that can be resisted, and provide some player control over the tension.

Follow up: when the party splits during a score, should position be tracked for each sub-group, or for the score as a whole?