Dr_B says:
The tricky choice is [spreading skill points to cover a wide ramge of situations] vs. [boosting those areas where a group skill check might be required] , say when we are
all trying to sneak somewhere... Or we
all need to climb a tall wall.
I am looking at those puny 2 dice I have in Physical and Coordination, and cringe at the thought of letting everyone down... Year Zero can be punishing... Individual checks are fine, the group ones are deadly! ?
There aren't likely to be many group skill challenges like that; where they are, I'm likely to say either one person rolls for the group (with probably a higher difficulty to cover all of those involved), or that each person rolls individually, but extra successes can be used to cover other characters that failed. We'll see, if and when it comes, and depending on the context and circumstances.
That also brings me to something that I haven't yet fully fleshed out - characters helping each other / doing the same task. I'm torn between only having one person roll when eg searching a place, and the others helping, or having everyone roll. I'm tending to the latter, just to make things easier and to give you all a better chance of success.