Create the meeting with its agenda and send the notice to every owner.
The meeting notice is the document that summons owners to a meeting. The application generates it, emails it to every resident and keeps a record of the send, which is what makes the decisions taken there valid.

The property manager and the members of the board, usually the president.
The meeting is created as a draft: nobody can see it yet.
While it is still a draft you can edit the meeting freely: change the date, reorder the agenda items, add documents or reword anything. Review it carefully, because once the notice has gone out it should not be changed.
Every owner receives the notice by email and a notification in the application. The PDF is also published in the community for anyone who wants to download it.
If a resident says they did not receive it, use Resend notice: it goes out to them again without bothering everyone else.
If the meeting has to be called off, edit it and mark it as cancelled, or delete it if it was still a draft and nothing had been sent. Once the notice has gone out, it is better to cancel it than to delete it, so there is a record that it was called and then called off, and to let residents know with a message.