For organisers
List your event.
If you run an event in Macau that is not on this calendar yet, tell us here. Send the facts and the official event page, and we check them the same way we check everything on this site: against the dates the organiser has published. Nothing appears on the calendar until it has been verified, nothing goes live automatically, and a listing is free.
The official event page matters most. It is the source we check the dates against, so a submission without one usually cannot be listed. If the dates are not final yet, say so in the description and send the page anyway: once the window is clear we can carry the event with a tentative date label.