db – your numerous posts of yesterday seem to suggest that there’s more in the mortar than just the pestle!
Anyway, Peter’s advice close to the mark, where in NSW an Executive Committee Meeting can be called for by ≥1/3 of its Members.
So in your Committee of 3, that means you alone can call for a Meeting to be convened within whatever timeframe you (reasonably) require by way of a written advice to the Secretary, whose role it appears has been delegated to your Strata Manager.
You need a minimum half of the Executive Committee Members to attend the Meeting in order to achieve a quorum, and in your case that’s two Members; so you can’t make autonomous decisions!
As I think’s been suggested elsewhere, given your other posts about issues at your 3 Lot Plan, your objectives may be easier achieved if you were to “requisition” an Extraordinary General Meeting to be convened, because that can be done in writing by owner/s holding more than 25% of the total units of entitlement for the Plan, because a quorum for a General Meeting is determined on that same basis (i.e. 25%), and because you alone can achieve those criteria – you would of course need to submit the Motions that you want placed on the Agenda for discussion.