The body corporate manager gives the required notice of a general meeting stating time, place and agenda to all member of the body corporate .
The agenda contains only the motions to be voted on.
All member of body corporate notify that they can not attend and email in a proxy form giving their proxy to the body corporate manager , but also including instruction on how they wish to vote on the motions in the agenda.
The body corporate manager chairs the meeting and is the only person in attendance however all other body corporate members are present by proxy which forms a quorum.
Since each member has recorded their vote on the proxy the motion will be passed or rejected according to the body corporate members votes.
Essential in all practicality its an email vote , BUT must be done using a proxy.
Note above is legal and is being used currently by body corporates.