Missing chord symbols for jazz chords

I am trying to figure out how to add the chord symbols commonly used in Jazz.
Is there not a way to make the triangle symbol for a maj 7 chord?
I want to do a minor major 7 chord, so it could be written
with a triangle. Instead, I get a J.
it would be great to have options for all of these. alternative symbols.

The other one is shortening minor 7 flat five to the half diminished symbol
Which is an O with a line across diagonally. Once again a very common symbol.

I don’t see how to do that in the score or chord editor.

Thank you

Hi nad welcome,

Yes, this is possible in Preferences > Chords.