size of x's and o's above fretboard diagrams

There does not appear to be any way to adjust the size or location of the x's and o's above the fretboard diagrams (https://musescore.org/en/handbook/3/fretboard-diagrams). As you can see from the upload, at a larger size (4.00 scale), the x's and o's are too large and too far above the nut compared to similar large chord charts made by Hal Leonard and Alfred.