Yes you are correct about the lack of details.
6 Notice of executive committee meetings
(1) An executive committee of a large strata scheme must give notice of its intention to hold a meeting at least 72 hours before the time fixed for the meeting:
(a) by giving written notice (which may be done by electronic means) to each owner and executive committee member, and
(b) if the owners corporation is required by the by-laws to maintain a notice board, by displaying the notice on the notice board.
(2) An executive committee of a strata scheme that is not a large strata scheme must give notice of its intention to hold a meeting at least 72 hours before the time fixed for the meeting:
(a) by displaying the notice on the notice board, or
(b) if the owners corporation is not required by the by-laws to maintain a notice board, by giving written notice (which may be done by electronic means) to each owner and executive committee member.
(3) The notice must specify when and where the meeting is to be held and contain a detailed agenda for the meeting.
AND
15 Minute of certain resolutions to be included in executive committee’s minutes
The executive committee must cause to be included in its minutes a minute of all resolutions passed in accordance with this Schedule.
If their is no details of the resoloution on the agenda you should inform the SM that the meeting was not leagal and so any decisions weren’t legal and so the Sec has no power to execute any decisions untill properly convenened motion is presented and approved.
So tell the SM not to approve any spending untill a properly organised meeting is held and that any futher spending that occurs without complying with the above you will take action at CTTT to have the money recovered from the individual who suposedly authorized it (the office bearers insurance will not cover them for intensional misuse of funds).
Just like a GM you cannot add motions at the actual meeting they have to be on the agenda sent around to all owners.