Scout Roll: Can roll for others?

[Doujou]

Didn't think this was the case but wanted to clarify.

Today Aikons from AM won the roll and turned in tools, but let Sovs from AM (who rolled and lost) loot the gear.

From my understanding, the winner of the roll turns in tools and loots gear. The fact you rolled is your agreement to the player-made agreement. Am I wrong in understanding how this works?