Under the duration for the Calm Creature spell it reads, "2D6 minutes (creature PL * 1) or 1 hour (creature PL * 2)." Just under this is the table listing the PL of the spell in regards to calming various creatures, as well as the deity/element. I am not exactly sure how to interpret this (?).
Does it simply mean that if the PL of the spell for the creature is 1, it lasts 2D6 minutes, and if the PL of the spell is 2 than the spell lasts 1 hour? What about PLs higher than 2? Can you optionally spend more Stamina or FP in an attempt to double the creature PL to have the spell last for an hour (my best guess)?
I have a bit of similar confusion in regards to the duration for Summon Creature.