Tab Fretting
You can have a guitar tab in score configuration. You can specify a string for displaying the fret number of a note.
E.g. show fret number on string 3 for note "G3".
builder.addNote(0, "G3", "8n", { string: 3 });
When adding multiple notes at once then string value can be an array.
builder.addNote(0, ["C3", "G3"], "8n", { string: [5, 3] });
Array also works when adding chords.
builder.addChord(0, ["E4", "C3"], "8n", { string: [1, 5] });