We had an EGM some time ago. We never had any officeholders appointed so there was no secretary. Our strata manager had the delegated powers of the executive committee but as we were replacing them, we bypassed them altogether. All owners who showed any interest in the issue agreed to the EGM resolutions, none opposed, so we went ahead and had the EGM, arranged it ourselves, sacked the manager and appointed a new one. The sacked manager didn’t complain.
If you are in a harmonious building or there is no opposition, you can probably get away without complying with all the technical requirements of the Act for calling meetings. What the courts look at is whether had the ECM been convened correctly, would the result have been different. If the answer is no, then the ECM resolutions stand.
Anyone who is not happy with the outcome of a meeting can also requisition a new one to reverse the outcome.