Annual General Meeting that isnt annual

It is now one year and two months since our AGM.  I have read that in certain circumstances that the AGM can be moved.  But wouldn’t the owners have to be notified of this?  And who would be responsible for keeping tabs on the date for the AGM?  The poor unfortunate strata manager who took on this dysfuntional complex in the latter part of this year?  Or the dysfunctional EC?

And how would the fact that the AGM is over affect those in the complex who are about to sell?  Could a buyer be advised that this is not a good complex to buy into if the AGM isnt held?