A Playlist is the sequence of content that plays on your display. Each item plays in turn, then it loops. You can have as many Playlists as you like and assign them to one or more displays.
See Adding Content to a Playlist for details.
Playlists are shown in a grid by default. Switch to list view using the view toggle in the top right.
Open the Playlist and click the name at the top to edit it. Press Enter to save.
Click the delete icon on a Playlist card. You will be asked to confirm before it is removed. Deleted Playlists cannot be recovered.