(しょぞく) To belong to such-and-such a department. “Hi! I’m Ross Henderson, from Marketing!”   PPP
yyy(ふぞく) To be affiliated with such-and-such an organization. The library is affiliated with the university. The catholic elementary school is affiliated with the neighboring catholic high school.
(ふぞく) It’s pronounced the same as 附属 and looks almost identical, but the meaning is very different:to be physically attached or part of a set. The bolts and nuts that come with an Ikea table.