Since the Strata Manager is there to do as the Committee instructs (and not the other way round) ulitmately, the responsibility is the committee’s and, specifically, the secretary’s.
However, if you have delegated the secretary role to the strata manager, then it’s pretty much up to them. A letter to the SM and Secretary asking when you are going to have an AGM would be worth the price of a stamp.
However, remember that the new strata laws specified one AGM per financial year rather than one a year on or near the anniversary so, theoretically, there could be an 18 month gap between your last AGM under the old system and your first under the new one.
The opinions offered in these Forum posts and replies are not intended to be taken as legal advice. Readers with serious issues should consult experienced strata lawyers.