I have a jazz band chart written for my Alto Sax and I would like to input this chart into iRealPro in order to practice some improvisation. I am struggling on how to do this, since I can't get iRealPro to show me the appropriate chords for the sax AND play in the right key!

For example, my music is in the key of G (not concert key, but alto sax key), and I have a G7#9 followed by a C7.

How do I do this?