The MIDI Editor provides a single lane under the Notes pane for editing velocities, MIDI controller data, or automation for the focused MIDI or Instrument track. You can resize the lane just like in the Edit window.
To change the Automation or Controller type for a lane:
Click the Lane View selector and select the Automation (Instrument tracks only) or Controller type you want.
Click the Lane View selector and select the Automation (Instrument tracks only) or Controller type you want.