In response to your questions:
- Annual General Meetings (AGM) are required to be held annually, and on a date that’s within one month either side of the date when the first (ever) AGM was held.
- The Secretary of your Executive Committee can convene, and therefore set the date of an AGM
Even though the responsibility for convening Meetings of the Owners Corporation (O/C) has likely been delegated to the Strata Manager, it’s important in your circumstances to note that any such delegation is granted by the O/C, and that under the provisions of governing Legislation (the Strata Schemes Management Act in NSW) the O/C remains the “Principal Manager” whose decisions override any taken by a delegate.
With regard to your intention to replace the Strata Manager, if that involves terminating your O/C’s current Agency Agreement, then the O/C will almost certainly be required to provide that Agent with three (3) months prior written notice of that intention, relative to the expiry date as shown in that Agreement.