Note that the admin should be limited to "trusted" users

docs/topics/permissions.md

@@ -4,6 +4,10 @@
 
 Wagtail adapts and extends [the Django permission system](https://docs.djangoproject.com/en/stable/topics/auth/default/#topic-authorization) to cater for the needs of website content creation, such as moderation workflows, and multiple teams working on different areas of a site (or multiple sites within the same Wagtail installation). Permissions can be configured through the 'Groups' area of the Wagtail admin interface, under 'Settings'.
 
+```{note}
+Whilst Wagtail supports a number of user roles and permissions, the Wagtail Admin should still be restricted to trusted users.
+```
+
 ## Page permissions
 
 Permissions can be attached at any point in the page tree, and propagate down the tree. For example, if a site had the page tree: