Merge pull request #11373 from nextcloud/backport/11370/stable28

[stable28] feat(admin): document the new out-of-office feature

admin_manual/groupware/index.rst

@@ -8,4 +8,5 @@ Groupware
 
  calendar
  contacts
- mail
+ mail
+ out_of_office

admin_manual/groupware/out_of_office.rst

@@ -0,0 +1,36 @@
+=====================
+Out-of-office feature
+=====================
+
+.. versionadded:: 28.0.0
+
+The out-of-office feature allows users to schedule an out-of-office period including a status and
+message that is integrated with other apps such as Nextcloud Mail. Please refer to the user
+documentation for more information about the feature itself. It may be disabled globally by admins.
+
+The feature relies on users to configure their preferred calendar time zones correctly. However, if
+a user does not configure their time zone, the default time zone of the server is used. It can be
+configured by setting ``default_timezone`` in the `config.php` file of your Nextcloud server. The
+configuration value accepts IANA identifiers like ``Europe/Berlin`` and defaults to ``UTC``. Please
+refer to the `Nextcloud configuration` section for more information about the value.
+
+To disable the out-of-office feature for all users the ``hide_absence_settings`` app configuration
+value of the `dav` app has to be set to `yes`. This can be achieved by running the following
+command on your server:
+
+::
+
+ occ config:app:set --value=yes dav hide_absence_settings
+
+.. note::
+
+ Out-of-office periods that were scheduled before the feature was disabled will not be deleted.
+ Disabling it will only hide the feature from the user interface. If the feature is enabled
+ again, the periods will be visible again.
+
+Set the value for `hide_absence_settings` to `no` or delete the configuration option entirely to enable the feature again. The following
+command can be used to do so:
+
+::
+
+ occ config:app:set --value=no dav hide_absence_settings