Logic Pro's Chord Trigger turns single notes into full chords, and this walkthrough from Mastering.com covers the basics of how it works.
Single mode plays the same chord quality (like minor 7th) across every key, just with a different root note each time.
Multi mode is more flexible, letting you program a different chord on each trigger key to build your own progression.
Everything is set up in C major/A minor by default, so you'll need to transpose or edit the notes to match your actual key.