Enable this group policy to show the documents and folders icons in the Dock. Application icons will be put to the left of (or above) the line in the Dock and document and folder icons will be put to the right of (or below) the line. Adding a document or folder path to the dialog will cause that document or folder to be shown in the Dock. The document or folder path can contain the "$USER" variable which will be replaced by the logged in username. If the path is wrong, a question mark (?) will appear in the Dock.
Once enabled, this group policy takes effect when users log out and back in.