Limit the amount of people who can attend an event

[ondrej]

This has now been implemented as per this announcement.

Max attendees support for discourse-calendar

We added the ability to define a maximum number of attendees to an event. This feature can be configured in the event form: [Screenshot 2025-09-01 at 22.43.09] When an event is full you won’t be able to join it, only mark yourself as interested or not going: [Screenshot 2025-09-01 at 22.43.32] We might implement a waiting list in the future, but for now the list of people interested is the best way to achieve something similar.