CHRIS SANSOM commented,
Never mind - problem solved on another forum: stack the numbers 1 and 2 vertically so they take up no extra horizontal space. Obvious!
CHRIS SANSOM created a post,
First, my preference for staff and group names is to right-align them close to the staff, with the group names just far enough to the left of the staff names to make a single-staff group (eg, Tpt. ...