Once installed and activated, you will see the Hide Download options area when creating or editing a download. The options are located in the Download Settings area in the right column of the create/edit screen of a Download.
The two options available are:
Hide this download - This hides the download from the Downloads archive page which is typically located at http://your-site.com/downloads
Disable direct access to this download - This removes access to the download. In the event a user were to enter the direct URL of the download, it will not be available.