I have just re-read the law and the regs and it seems a candidate for election to the EC can be nominated by an owner who is him or herself standing for election. So cross-nominations are allowed provided it’s not co-owners of a lot nominating each other.
Have a look at this, specifically Part 5, which describes the process. Meanwhile, (below) here are the basics with one additional point – you can’t nominate someone else if you are not entitled to vote at the meeting, meaning you have to be an owner AND be up to date with your levies to nominate someone (although neither qualification is required to be a candidate).
2 Constitution of executive committees for strata schemes with more than 2 lots
(1) This clause applies to an owners corporation for a strata scheme comprising more than 2 lots.
(2) The executive committee is to consist of such number of members, being not more than 9, as the owners corporation may determine.
(3) The members of an executive committee must be elected at each annual general meeting of the owners corporation.
(4) A person is not eligible for election as a member of an executive committee unless the person is:
(a) an individual who is an owner,
(b) a company nominee of a corporation that is an owner, or
(c) an individual who is not an owner but who is nominated for election by an owner who is not a candidate for election.
(5) A person who is co-owner of a lot may not be a candidate for election as a member of the executive committee unless the person is nominated for office:
(a) by an owner who is not a co-owner of the lot, or
(b) by a co-owner of the lot who is not a candidate for election as a member.
(6) An owner of a lot who is not a co-owner of the lot may nominate himself or herself for election as a member of the executive committee.