Dorico highlight piano treble staff

I have Dorico 3.5 Pro, I work with piano score
Now I want only viewing the treble clef from

Highlight piano treble staff Window >> counterpart layout.

How can I do that?

Does it need to highlight all treble staff first? If it so How!!

Please help

Many thanks…

You can’t create a part layout that contains only the right-hand staff of the piano, but you could create a manual staff visibility change at the start of the part to make Dorico hide the left-hand staff.