Thanks Dean
CTRL+A
Will select everything on the page allowing you to move and scale multiple elements.
CTRL+SHIFT+F
Will select all fretboards on the page, then press CTRL+I to bring up the inspector which will allow you to edit note marker labels, colours etc.
CTRL+SHIFT+F followed by CTRL+SHIFT+A will select all note markers on the page, then press CTRL+I to bring up the inspector which will allow you to edit note marker labels, colours etc.
To Edit Just A Couple Notes
You can hold down the SHIFT key and select multiple markers with your mouse.