On my flight on Sunday there were 2 non-revs in Business Class who weren't sitting together. They asked the flight attendant if they could help them switch seats which the FA told them they should ask the passengers directly.
He then asked them if they were non-revs to which they said yes...he told them then you shouldn't ask the passengers to swtich if you are a non-rev. Of course, they did anyway, as I saw some musical chairs