To create a Setlist:
Navigate to the Setlist tab on the home screen by tapping Setlists
Tap the '+' button to create a new Setlist and name it
You can add songs to your Setlist while in the Setlist tab of the home screen or after going into the Setlist you want to add songs to.
While on the Setlist Tab of the home screen:
Tap the ⋯ to the right of the Setlist you want to add songs to
Tap the + to add songs to the Setlist
Tap the ◎ to the right of the song you want to add. You may add any number of songs at the same time
Tap 'Select' to confirm
While in the Setlist, you can tap the ⋯ at the top right and then follow the above process as well.