icon shows if there is an
empty timeslot. Click 
or 
to insert a
playlist in that time
slot.
The Agenda View is a daily-based interface showing the scheduled
playlists, the empty time slots for inserting playlists. To insert
playlist with agenda view, click Agenda tag and all of the
scheduled playlists on the day will be connected together and the
icon shows if there is an
empty timeslot. Click or to insert a playlist in that time
slot.