...
It is also possible to select or assign the calendar in the default edit popup.
Calendars
...
To enable calendars it should first be enabled under the features tab.
...
The default calendar let’s you define what calendar is used for newly created events.
Persisting data
...
When calendars are enabled and you want to persist data (such as changes or the creation of events), you need to map “Event calendar(s)” to an association on your context to your calendar entity. This association will be updated with the new calendar assigned to the event. This value can be used in on-change or create flows to persist the calendar for the event in the database.
...