What I do is creating a flat html personal page (as admin) in the report zone
/admin/report/adminlinks/index.php
I borrow the protection code from another report page, to keep this page mine
(as admin)
On this page I paste link to pages I often use and are (in my personal view) not easy organised in the admin tree:
Your example will be a link to:
http://yourwebsitadress/course/index.php?categoryedit=on
Most of these links are not insecure, but protected by Moodle:
if you try this one and you are logged in as admin, you get access.
Otherwise you must login and only if you login as admin you get edit access rights.
Roles and permissions
Categories No clue as to how to start
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