I’d like to duplicate an entire player’s music (or instrument) in the full score, change the clef in the duplicated version, and place it immediately after the original.
Is there a way to duplicate the complete music for an instrument and append it after the original, rather than copying and pasting the full score?
I need to convert the viola and trumpet parts entirely to the alto clef, and then join that to the score, which is in the tenor clef. How should I do this?
But if you just need a duplicated part layout with the changed clef, rather then needing it in the score as well, then you can duplicate the layout and use Clef and Transposition Overrides to change the clef in the layout.
So you want two versions, but in different clefs, in the same document? How I do this (quite often, actually): in Setup Mode, create different layouts with different clef/transposition overrides, then export the different layouts to separate PDFs, and the combine those in a PDF editing application (on Mac, the Preview app can do that). Don’t bother creating unnecessary duplicate flows in the Dorico project.
The simplest solution is probably to copy/paste in this case. I can reproduce your example with the two linked elements, but it’s not very straightforward: the second part is a cue of the first part, and I create a page template with two independent frames.
I made this example partly as a challenge, but to know whether it applies to your situation, we’d need to know your exact setup — how everything is organised, etc. And also whether you need real cues elsewhere, because if you do, my method probably won’t be usable (to make cues look like normal notes, I rely on Engraving and Notation Options that are global).