How do we write the possessive form for "people?" For instance, let's say that I manage money for other people. The people are individuals, here, not a collective (a people).
Which is correct, and why?
I manage other people's money.
I manage other peoples' money.
I suppose the fine line would show itself if I were to say,
I manage a people's money.
Then "people" becomes a singular collective. This is not the case for my question. In general,
's seems to be used in singular possessive cases and
s' in plural possessive cases. "People," as used here, is a true plural, which would imply the use of
s', but that looks odd.