Like this. I don’t know if this: https://i.imgur.com/RoJg9s6.png
I don’t know if this has been implemented yet, but I was talking about this on reddit today and remembered to report. A few months back we had to transcribe a fuckton of scores that had this and I ended up having to print a screen shot of that breath mark and layer it atop every PDF we would export for printing.
Another stuff that showed up a lot was a slur with a breath mark in the middle, also impossible to do with Dorico.
I was in Dorico 3, so maybe that was fixed, IDK.