Document service backup.create_automatic

source/_integrations/backup.markdown

@@ -25,15 +25,32 @@ To learn how to create and restore a backup, refer to the backup section under [
 
 ## Actions
 
-The **Backup** integration exposes an action that can be used to automate the backup
+The **Backup** integration exposes actions that can be used to automate the backup
 process.
 
-However, it is no longer needed to create your own automation. Follow these steps to [set up an automatic backup from the UI](/common-tasks/general/#setting-up-an-automatic-backup-process).
+### Action {% my developer_call_service service="backup.create_automatic" %}
+
+The {% my developer_call_service service="backup.create_automatic" %} action can be used
+to create a backup of your Home Assistant instance, using the same settings as those used
+by [automatic backups](/common-tasks/general/#setting-up-an-automatic-backup-process).
+
+This action can be called to create backups with pre-defined settings at a more flexible
+schedule than the schedule which can be configured for automatic backups.
+
+The action has no additional options or parameters.
+
+Example action:
+
+```yaml
+action: backup.create_automatic
+```
 
 ### Action {% my developer_call_service service="backup.create" %}
 
 The {% my developer_call_service service="backup.create" %} action can be used
-to create a backup for your Home Assistant instance.
+to create a backup of your Home Assistant instance.
+
+This action is only available in [core and container installations](/installation/#advanced-installation-methods).
 
 The action has no additional options or parameters.