I want Staff Spacing as shown in this picture:
But brackets as shown in this one. As soon as I change the brackets, the spacing changes.
That’s what I have in my second example: but I can’t get bigger spacing between the sub-groups.
My guess is you’ll have to do the spacing manually on one page and copy to others in engrave mode. Check back Thursday for details on D3. Who knows? Maybe it will address this.
Dorico doesn’t provide an option for this at the moment. It will only space staves according to the primary bracketing groups.