Hi Jim,You can try setting Acl permission deny with Privileges to
jcr:read for your author group from crx/de on Following nodes-:For
Assets-Touch UI-:[0]
/libs/dam/gui/content/assets/jcr:content/actions/secondary/create/items/createfolder[1]
/libs/dam/gui/content/assets/jcr:content/actions/selection/create/items/createfolderClassic
ui[0]
/libs/wcm/core/content/damadmin/actions/create/menu/createFolderFor
Sites-:Touch UI-[0]
/libs/wcm/core/content/sites/jcr:content/actions/selection/create/items/...