…and assuming Oscar 47 is in NSW, the Committee is also required to provide a Notice of Meeting (Agenda) to all Owners a minimum 72 hours in advance (ref: Sch.3 Pt2).
In addition to and possibly prior to actions under the advice provided by KWP, you might inform your Committee Members that they’re compromising the protections afforded to them under the Office Bearers Liability Policy of the Owners Corporation’s Insurance, and that consequently they could be held personally liable for the consequences of any illegal or otherwise non-compliant (with Sch.3) decisions collectively taken.