L-shaped sign for hand distribution?

Is this sign available in Dorico? Can’t seem to locate it. Not interested in using “m.s./m.d.” or other text variations - too much clutter on the score.

You can find those glyphs there : http://www.smufl.org/version/latest/range/keyboardTechniques/
You can insert them in your score using shift-X (remember to put paragraph style on Music text) and fine tune their position in Engrave mode. Because I do not think they are implemented in Dorico yet (but I might as well be wrong)