You can spend one Hope to help an ally who is making an action roll that you could feasibly aid them in. When you do this, describe how you’re helping and roll a d6 advantage die (see “Advantage and Disadvantage”). They can add the result to their action roll. If more than one PC wants to help an ally, each spends a Hope to roll a d6 advantage die, and the highest result among all those advantage dice is added to the roll.

If the PC who is being helped already has advantage on the roll from another source, they can roll that d6 along with the other players’ advantage dice from Help an Ally, then pick the highest result among all of them.