Non-Combat Level
Source GM Core pg. 132
An NPC's level should represent their combat prowess. An ordinary person might not be a combat threat, even if they're important or highly skilled, and they consequently have a low level. However, that doesn't mean they can't present a challenge in other types of encounters. This is represented by a non-combat level and tends to be specific to their area of expertise. For example, a corporate lawyer might be level –1 in combat but a 4thlevel creature in an encounter related to legal matters.
This can go the other way as well, such as with a powerful combat creature that's not suited to social settings. This is usually the case with creatures untrained in mental skills. You can improvise this as you run the game, or you can plan ahead if you have something particular in mind.
Building an NPC's non-combat level is relatively simple. Choose the level you want the NPC to be for the type of non-combat challenge you have in mind and use the skill numbers for that level—typically high or even extreme. Some challenges, such as social challenges, require the creature to have a high Perception and Will, so in those cases, you should increase those values as well. These should be set at the moderate or high values for the non-combat level, usually, depending on how adept you want the NPC to be.
This can go the other way as well, such as with a powerful combat creature that's not suited to social settings. This is usually the case with creatures untrained in mental skills. You can improvise this as you run the game, or you can plan ahead if you have something particular in mind.
Building an NPC's non-combat level is relatively simple. Choose the level you want the NPC to be for the type of non-combat challenge you have in mind and use the skill numbers for that level—typically high or even extreme. Some challenges, such as social challenges, require the creature to have a high Perception and Will, so in those cases, you should increase those values as well. These should be set at the moderate or high values for the non-combat level, usually, depending on how adept you want the NPC to be.
Non-Combat XP
Source GM Core pg. 133
The Experience Points gained for besting an NPC depend on how the party overcame them because XP comes from overcoming a specific challenge. If the PCs defeat the NPC in a non-combat setting of the NPC's specialty, the party gets XP based on the NPC's non-combat level. If they just beat the NPC up, the XP would be based on the NPC's creature level. Quite often, that means 0 XP and failure at the PCs' objective; for instance, during a rock band audition, if the PCs murder the other musicians, not only would they be disqualified, but they would likely be charged with a crime.