Benwiggy, it is clear that the Dorico team has an ideal relationship with users and is very responsive to most requests. However, in this case, less so.
Several months ago I described how difficult is was to accomplish complex piano fingering in Dorico with an example: https://www.steinberg.net/forums/viewtopic.php?t=131380
You can read Daniel's response there. I did not find it encouraging.
I posted again at Notatio, with a response from Daniel at Notatio. He wanted to understand the steps necessary to accomplish this in Finale. I showed how it is done. There was no further response. viewtopic.php?f=7&t=386&start=40
Having just finished a big project in Finale, I am eager to try the next in Dorico, particularly since it appears from what Florian said, that I can tailor the glyphs to my needs, but I am dead in the water because of the fingering issue.
However, I have no doubt that Dorico will eventually have the capabilities I need, because publishers of edited piano music will not be able to use Dorico without using awkward workarounds or taking files into other applications.
Mac mini (OS 10.8.5) with dual monitors, Kurzweil Mark 5 with M-Audio Midisport 2 x 2,
Finale 2014d with GPO 4, JW Plug-ins, SmartScore X Pro, Adobe InDesign CS4,
Inkscape .48.5 and .91, FontForge 20150526