How do I create harp placing brackets?
Placing brackets tell a harpist where to put their fingers so as to play the next two to four notes. It looks like a "[" bracket, rotated 90 degrees, over (or under) the notes, with fingerings attached. I get the impression that they are primarily used by beginners.
Here is a blog article with music to practice that talks about the brackets:
Here are a couple of sheet music snippets showing the brackets.
Can I make them in MuseScore, and if so, how?