Who selects a Frequency Coordinator?

Frequency coordinators are recognized volunteers who manage local spectrum usage to prevent interference between repeaters. They are not appointed by the FCC or any other government agency. Instead, amateur radio is largely self-governing when it comes to repeater coordination. Coordinators are selected by local or regional amateur operators whose stations are eligible to be repeater or auxiliary stations. Distractors on this question usually try to trick you into thinking a formal government body assigns these roles, but the FCC delegates this responsibility directly to the amateur community.