Remove a folder’s inherited ACL entries

If you don’t want inherited access control list (ACL) entries to apply to a folder or file, you can remove those entries using the Server app.

Unlike explicit ACL entries, inherited ACL entries appear dimmed in the Server app’s dialog for editing access permissions.

Select your server in the Server app sidebar, then click Storage.
Select the folder or file whose access permissions you want to change, then click the Action pop-up menu , then choose Edit Permissions.
In the Edit Permissions dialog, click the Action pop-up menu , then choose Remove Inherited Entries.