If another PC helps you, both of you roll, and both of you get the effect of the better roll.
So, if three or more PCs all Recover, Regroup & Prepare together, and one of them rolls a 10+, they each get to choose 3 options, separately and independently from each other?
In the moment, it would have made more sense to us if they had to choose just 3 between all of them, and they all got the benefits from all 3 choices... the
same 3 choices. This way, if they chose to study the situation and make a plan, they'd all be studying the same situation and making a common plan. But then, one of them wanted to consult with a ghost tutor, and do it quickly, while the others didn't have any ghosts to consult with...
My point is: when three PCs all roll to Recover, Regroup & Prepare in the same situation, they sometimes get the overall net benefits of making a grand total of 9 choices from the move, all applicable to the same situation. OTOH, if I mitigate this by ruling that they all have to choose the same options, I'm effectively ruling out all skill-based options. Should I limit this to a maximum of 2 PCs rolling dice, instead?
Also, it was sometimes a little tricky to judge when two PCs were in a position to help each other with this, because it depended on whether they intended to choose "regroup with your allies" as an outcome. Specifically, when three PCs were all in different parts of the city and they wished to reunite, in order to exchange information and make a plan, they all rolled +Patient as they were helping each other on the move - it made sense, because they were all trying to meet. Then (only) one of them picked "regroup with your allies" as a choice, and they got to benefit from 8 more choices between the three of them.