1- Click on “Playlists” in the left vertical menu. This will load all of your playlists and also the public playlists.
2- Click on the playlist that you want to edit, under “Your Playlists”. This will load the Playlists detail page as below.
3- Click on “Edit’ button in the right, above the Playlist thumbnail list. This will load the Playlist Edit page.
4- On the Playlist edit page, you can enable the “Internal” option in the left.
5- You can click “Save” once changes are made. This will take you back to the Playlist detail page with the updates. This playlist will be visible to your enterprise’s portal users.