Standard way to format Chord Symbol and Rehearsal Mark on the same note
Seems like it's a common enough occurrence. I decided here to let the chord symbol stay in the default position, and to move the rehearsal mark to the right of it. It looks OK to me, but I'm wondering if that's normal. In a sense, the rehearsal mark is too far rightward. In another sense, it probably doesn't matter much. The example image is paired down to make it as small as possible.
By default, MuseScore tends to resolve this conflict by putting the rehearsal mark above the chord symbol. But that also forces an increase in the space between systems, which can cause fewer systems to fit on the page. So I prefer a horizontal solution. But if there are standards and I'm just being a goofus, I'll add height or do whatever is most readable for others.