Ann: Court Action Seeking 22.28% of NME be Vested in ASIC & Sold, page-43

Looks pretty straightforward to me, the member casting the proxy votes MUST have a signed form.

http://www5.austlii.edu.au/au/legis/cth/num_act/ca2001172/s250a.html

"Appointing a proxy

(1) An appointment of a proxy is valid if it is signed by the member of the company making the appointment and contains the following information:

member's name and address;
(b)
the company's name;


(c)
the proxy's name or the name of the office held by the proxy;


(d)
the meetings at which the appointment may be used."