Non-equal tempered tuning

[benwiggy]

See this recent discussion:

Is there an easy way to set up an unequal temperament in Dorico?

By unequal I specifically mean anything from Pythagorean to Kirnberger III, but still with 12 tones to the octave. (It has to be playable on an ordinary harpsichord.) The Tonality System menu seems more geared towards equal microtonal temperaments. I guess I could use 1200 (or 12000) ET and then set an unequal number of steps between all the white-key notes, according to the cent amounts. Correct? But that would still leave all the black-key notes unaccounted for. Is there an easy way to set t…