Saving Music Glyph changes

If one does a set of music glyph changes, how does one save that in such a way to make it convenient to reuse them in another piece (that uses the same glyph changes)? Can one save those as some sort of ‘library’? (As opposed to only in the piece at hand.)

Where exactly did you change the glyphs? In Library->Edit Music Symbols you can “Save as Default” by clicking on that star:

Hmm, I think what I’m looking for is how to use the new (as of 4.X) ‘Library Manager’ feature…