More Labour Party Rules, a reconvened AGM cannot be packed.
Chapter 15.I.E.i [Both:] When an annual or special meeting is not held for any reason or is abandoned without completing the business on the agenda, such meeting must be reconvened as soon as practicable in order for any necessary outstanding business to be transacted. Only those eligible to participate in the meeting as first convened, whether or not held, shall be entitled to participate in any further reconvened meeting.
My emphasis
Reconvening