I want all authors to be able to ingest, edit, update, publish etc., but we would only like admins to be able to create any new folders. Is it possible to do that?
You can try setting Acl permission deny with Privileges to jcr:read for your author group from crx/de on Following nodes-:
I tried setting it for content-authors group and it works for me
from a UI perspective Sarvesh's comment is correct, as it will hide the respective items in the menu. But you can still create folderes directly in /content/dam using the standard HTTP interface.
That would work. 99% of the Authors would never look to any other method than a menu selection. We just don't want them creating hundreds of individual folders to suit their tastes. This will help much. Thanks!