Once your Nod account has been setup, you can manage your playlists using Nod's drag-and-drop playlist editor.

Your administrator will assign you access to the playlists you need.  These are listed on the left.  Select a playlist, then drag-and-drop to add and re-order content.

When you add content (or click the edit button), you can configure how the content will play.  For more options, please talk to your system administrator who can configure content using tags and zones.