Interviewers are the panel members on actual scheduled interviews — each row pairs one interview with one user (or, for external attendees, one email address). When an interview is scheduled, the stage's default interviewers seed this panel, but the final attendee list can differ once the calendar event is built and edited. Each row carries its own scorecard_id (one placeholder scorecard per assigned interviewer) and a response_status reflecting the calendar RSVP. Filter to one parent with parent=interview, parent=user, or parent=scorecard plus ids. For the per-stage default panel, see /v3/default_interviewers instead.