(Divine) Ceremony participants -- what do they need to know?

[ezzelino]

RoP:D, p.36, states about Ceremony:

...at least one of the participants must possess the Ability [that Ceremony is boosting, e.g. Enchanting Music or Trascendence] (this character is called the focus character), and if it is a Power, whatever Method the character would normally use must be
used by each member of the group.

This would seem to suggest that if boosting a Power+Method combination, only one participant need to know the Power, but every participant need to know the Method. But when talking about the bonus each participant provides to the casting total, we read:

If a character does not have the relevant Ability or Method, only the Characteristic is added.

which suggests participants do not need to know the relevant Method. Which is which? Perhaps there is a typo, and participants get to add Characteristic + Power -- so that every participant needs to know the Method, but it's the Power score that gets added? Or perhaps the first part of the text only means that every participant must "pay the costs" that come with the Method (say, if the Method is Purity, every participant must engage in a strenuous activity causing the loss of a fatigue level or a light wound), but this can be done without actually knowing the Method?

[ezzelino]

A related question would be the following. We know that, if the Ceremony is leaderless, not everyone needs to know the Ceremony Ability. Can it be the case the noone* in the group does?

[Ramidel]

Ceremony is a Supernatural Virtue, so if no one in the ceremony has the virtue, they can't use it.

[Lamech]

@ezzelino

Or perhaps the first part of the text only means that every participant must "pay the costs" that come with the Method (say, if the Method is Purity, every participant must engage in a strenuous activity causing the loss of a fatigue level or a light wound), but this can be done without actually knowing the Method?

This is how I interpreted it. Everyone pays the cost, a light wound, a fatigue level, a faith point, your immortal soul.

[Erik_Dahl]

That's right. If they were casting a spell, the ceremony lets them all cast it together, so they all take fatigue or spend Confidence to invoke the effect, or chant in Latin and make gestures, whatever it takes to cast it.

Someone has to have Ceremony to use it.