def METHOD_NAME(
    api_client, event, registration, signup, signup2
):
    registration.maximum_attendee_capacity = 2
    registration.waiting_list_capacity = 2
    registration.save()
    reservation = SeatReservationCode.objects.create(seats=1, registration=registration)
    reservation_data = {
        "seats": 2,
        "registration": registration.id,
        "code": reservation.code,
    }
    response = assert_update_seats_reservation(
        api_client, reservation.id, reservation_data
    )
    assert response.data["in_waitlist"] == True