Change the staff (up or down) uf a note on a score

Cubase
1

Hi, I would like .to discover how to easily change the staff (up or down) of a note written on a score under Cubase 14 when you wrote two voices in the same staff.
Thank you
François

2

Hi everybody,
I wasn’t probably clear enough ! I wanted to speak about the staff of a musical note upwards or downwards… How to do it ? Thank you so much for telling me !
François