Felix – as a NCAT Adjudicator won’t, upon application, appoint a person as a Member of an Executive Committee unless that person agrees to serve, then it follows that those Owners present at an Annual General Meeting (AGM) would be similarly bound, and that those people who do accept a nomination and are subsequently elected as Members must then appoint their Secretary, Chairman, and Treasurer at an Executive Committee Meeting (that for convenience usually follows the AGM).
So NO, Members who are nominated and elected cannot appoint additional Members unless those persons agree to serve either in person or in writing.