CalDAV Nextcloud 27

I read the release notes for NC27 and am trying to understand if one can now use nextcloud to access calendars from elsewhere via CalDAV and create/edit/delete appintments and meetings. To date, i think NC has only allowed subscribing read-only via ical links.

calDAV was usable already before, you could use it with Thunderbird, or iOS devices, …

For external access, the setup of the service discovery is often essential to make it work properly:
https://docs.nextcloud.com/server/latest/admin_manual/issues/general_troubleshooting.html#service-discovery

Thank you…I may have explained my concern poorlu I understand that the calendar created by nextcloud is available to 3rd party apps via CalDAV. I am asking about calendars created outside of nextcloud and that are also available via CalDAV. Through NC26, there is not a way for one to add an external calendar via CalDAV to create/edit/delete appointments and meetings. To date, i think NC has only allowed subscribing read-only via ical links.