Can the Strata Manager decide who proxys go to?

We have a Strata Manager who brought up in “general business” at the AGM that she had dissolved her partnership and created a new business and sought to be appointed as the “new” strata manager.  The “secretary” of the EC approved and signed the agreement.  This was all wrong as per Flat Chat and The Office of Fair Trading so it was decided to call and EGM to discuss appointing a new Strata Manager and also raise a “special levy” for some large repairs.

The Strata Manager has sent out the agenda with only one item – appointing her under her new business as Strata Manager.  The Proxy forms are worded that should an owner give a poxy the proxy is to appoint her as the manager.  There is nothing an the Agenda re the special levies.  The secretary is not a registered owner and did not have a proxy at the AGM so my view is she should not be on the Committee.  Can we (the owners) cancel this AGM due to the content of the agenda?  We wanted to put out to tender and seek applications from a few Strata Managers and also only one item on the EGM means we cannot discuss the special levy – am I correct?  Can this be brought up as “general business”?  My understanding is you cannot have “general business” at an AGM or EGM – am I correct?