The program attaches chords automatically to the melody.
I explained "Automatic Chord" simply with page of "Practice" already.
On the main menu, point to File, and then click New 4/4.
Input chords using "Chord" button.
If you will make a song of bar 8, click "[C] Chord" button 8 times.
On the main menu, click "Input Notes".
You already know how to input notes.
Input notes of the song.
On the main menu, point to settings, click "Automatic Chord".
Look at the "Priority of Key".(It is number 1 in the picture)
You can select a Key that is suited to the melody.
Priority is from left to right.
Major chord that is used in the song.(It is number 2 in the picture)
Minor chord that is used in the song.(It is number 3 in the picture)
Chord progression that is used.(It is number 4 in the picture)
You can change to minor chord by click in the cell.