I often run into this issue during my session. It's a bit hard to describe...
During Skill check, they would attempt multiple tries.
For example, they attempt to charm a shop owner with a rose (i give boast die for rose) but fail. So PC#2 take the rose from PC#1 and attempt the same check until they pass.
When they don't pass...They want to try again, but with different skill. "Okay, lets immediate the shop owner."
Example:
GM: The shop owner rarely give our discount
PC#1: I attempt to charm her with this rose.
GM: Ok, make a charm test, with boost die from the rose.
PC#1: -fail roll- ****, Hey PC#2 you try. Take this rose for boost die.
PC#2: Ok, I take his rose and attempt Charm. -Fail roll-
GM: Um...ok. You both fail to charm her.
PC#1: Let's just threaten her now. I'll Intimidate. -Fail roll-
PC#2: Ok, I'll try my Intimidate -pass-
Is this allow?
I feel like this is similar to "Passing the strongest gun between player" per turn.
"Here you try. Take it."
Thanks in advance for your input!