Can you show both staves of a piano in the piano roll editor at once?

Hello! I've been working on a personalized interpretation of "Les Cyclopes" by Jean-Philippe Rameau. While working, I noticed that I wanted to edit some of the timing in the piano slightly in articulations in both staves of the piano. However, I have been unable to sync the two identically because I can only see one staff at a time and not both. Is there a way to see both staves at once, or at least some other way to be certain I'm syncing them right? Thank you!