Yeah, just a network post yelling at people might work. Technically anyone who did the test drive can work with that CR...
For those who didn't- If not actual squad-making, at least some sort of"hey if you have x skill, go do y"

I guess some pre-planning works, too, if it's like
"okay we can't break them out unless we deal with the barrier" and arthur is only able to manage it by the 5th. depends on how it pans out, I guess!