Any idea about 2 chords in JS

[Diamant]

Would need Am7+ and Am6. How to do it or which chords can be surrogates (sorry my theoretical knowledge of music is rather limited) 

[wyotryot]

I'm pretty sure JS is limited in that respect. Old posts show many requests for more chords - for example, the genre of jazzz is woefully underrepresented for chords used. In translating my old tunes to JS I had to change many of them.
The variations selection has several choices, but you can't mix and match.