is there a Dorico way of reproducing this harp notation (handwritten example), or is it against notation convention?
I find braces under the glissando options - but they would disappear if I add the wiggly glissando line. It seems either / or.
Instead of using a “Non Arpeggio” arpeggiation for the braces, you could try using a “Solid vertical line with right pointing hooks”, which can be found in the right panel under Lines. They can be adjusted in Engrave mode.
(that’s not your picture - actually, your braces look better)
Of course any harpist would divide the hands that way anyway, so the marking seems superfluous. But I’m sure you are recopying something that has to match.
yes Mark, the source is a handwritten edition of a 1911 piece by Quilter.