I have just noticed that this question has been posted in the “living in Victoria” section. With that in mind, this is what the Owners Corporations Act, Section 89C, says about Proxies:
(3) An authorisation under subsection (1) must—
(a) be in the prescribed form; and
(b) authorise an individual; and
(c) be delivered to the secretary of the owners corporation.
(4) An authorisation may set out how a proxy is to vote on particular matters and is effective from the beginning of the first meeting of the owners corporation held after the date that the authorisation is delivered to the secretary of the owners corporation.
Does anyone want to take a punt on what the phrase “first meeting… held after the date that the authorisation is delivered” means?