Can we nominate another owner to join the committee without waiting for the AGM?
Section 39 (6) of the ACT Unit Titles Act says this:
The executive committee of an owners corporation may appoint a qualified person to fill a casual vacancy on the committee until the next annual general meeting.
A qualified person, for a units plan, means:
a person (other than the manager or associate of the manager) who is—
(a) the owner of a unit in the units plan; or
(b) if the unit is owned by a company or 2 or more part-owners—a representative for the company or the part-owners, as the case requires.
The election of the replacement member would be done by a simple show of hands at a committee meeting, with each member having one vote.