Tokøta from Mastering.com walks through Logic Pro's Arpeggiator, starting with its note order modes: ascending, descending, up-down, outside-in, random, and as-played, which captures whatever you play live.
Variation, octave range, and inversion controls add movement within those modes, letting a simple chord sprawl across registers instead of repeating the same shape.
The real transformation happens in Pattern mode. Switching from Live to Grid unlocks manual control over velocity, gate length, and which steps trigger full chords versus single notes.
That hands-on grid editing is what turns a flat, sustained chord into a rhythmic, evolving part, useful anytime you want more motion and emotion out of a static pad or keys part.