I don’t have the Mac version here, but doesn’t it have MIDI Chord Detection?
If by that you mean that quick'n-easy holding down the notes on your midi instrument and hit a certain keystroke combo to enter that chord into the sheet, then yes that's available on our end too. But that still hinges on actually having a midi instrument, which goes against my initial premise of this thread.
If, however, you are thinking of something entirely different, then a screenshot would be just the thing to clarify.