Duplicating setlists will create new setlist that will create an exact copy of the selected setlist.
This is useful if you would like to use the same setlist as the previous gig but make minor modifications.
It will prevent you from creating a new setlist from scratch.
In http://www.setlisthelper.com log in to the site.
Go to the “Setlist” tab.
Click this Duplicate… button as seen below.