I replaced the Jazz Doit glyph with EA02, then added it to the note. Then in Engrave mode, select the Doit by itself, and Command Alt Right a few times to move it, pushing everything else on the line back.
Then move it vertically to the correct pitch.
Obviously, if the line break moves, then it’s in the wrong place, but luckily I’ve got System Breaks everywhere, as I’m preserving the source lines!