John, I'd love to know by what procedure you would produce that fingering in Finale.
I use keyboard commands for the finger numbers, elisions and brackets and "play" them in with my left hand. The slurs are done with the slur tool and the line with the line tool. I would probably use a couple of guide lines in this case. It would take a very short time to accomplish since it would just be a matter of clicking or drawing every element into place.
Its been a while since I tried Dorico and don't have access to the program now, but I do remember using a pedal mark for the straight line, text boxes for the finger numbers and having to import elisions from a different font. Lining things up was quite involved and I never did get it right. As I said, I am hoping that all of this will be much easier in the latest version of Dorico.