Plone Folder Restrictions

In Plone, I created a new folder called "Admin" that appears at the top navigation bar. How do I restrict access to this folder so only site administrators will开发者_如何学C have access to this folder? (and, preferably, only those admins would see that link appear)?

Create a folder at the root level and keep it private and don't share it with any other groups. Administrators (by default) can view all content. Items for which a user does not have permission are not visible in the Global Nav, Nav portlets, search, etc.

Use the sharing tab and add the users/groups needed.