I asked this question in 2019 and still haven’t found a solution.
In an SATB choir piece on two staves I need to have the S and the A centred instead of right-aligned. In Finale there were two sets of settings for staff names, one for aligning and one for justifying. In Dorico it seems that one can only justify the names. This is the desired result (from a Finale file):
This is the result in Dorico with the staff name paragraph style set to centre:
The SA are properly aligned but centring includes the Piano staff name which places the SA and the TB too far from the staves.
This is the result in Dorico with the staff name paragraph style set to right align:
The positions of the staff names are now correct but the SA is wrongly aligned. The only way I can think of to get around this is to remove the Piano staff label, which actually isn’t a solution at all. Am I missing something?