How can I position one note of a group on another system?

I haven’t used Dorico for a while and currently cant remind, how I could position a single note of a group of notes on one beam on the other (upper/lower) pianosystem.
like it is written here.
Thank you for your help in advance.grafik

Write the whole group on one stave, select the note(s) you want to move and hit N to move them up a stave (N for North) or M to move them down a stave.

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Great! many thanks for your immediate help!!