Delete a move in a study?

I'm trying to make a study. I accidentally made a wrong move. But I can't figure out how to delete that move. I don't want to make a new variation. I just want to make that move disappear, so I can start over from that spot. But I can't figure out how to do it.

Stumped

Just right click the move in the notation, and click Delete from Here.(if you have an Apple Magic Mouse, cltrl+click)