moving the hyphen on the left of a system

I’ve searched, but just can’t figure out how to move the hyphen on the left?!

Engrave mode. Click on the first syllable. Then press left arrow once, which will select the hyphen. Then Alt-left arrow to move it.


(But I decided to change the rastral size a bit and now hyphen appears mid-system. However, now I know how to deal with it in the future.)