Mixing : Automation : Editing Automation : Editing Automation Types

Editing Automation Types
Each automatable control has its own automation playlist, that can be displayed by choosing it from the Track View selector. Viewing Automation.
Editing Volume Automation
Drag a breakpoint up or down to change the volume (dB value). Drag a breakpoint to the left or right to adjust the timing of the volume change.
 
Editing Pan Automation
Drag a breakpoint down to pan right, and up to pan left. Drag a breakpoint to the left or right to adjust the timing of the panning moves.
 
Editing Mute Automation
Drag the breakpoint down to mute a section. Drag a breakpoint up to unmute the section. Drag a breakpoint to the left or right to adjust the timing of the mute.
 
Editing Stepped Control Automation
Automation for certain controls (such as MIDI controller values or plug-in settings) appears as a stepped pattern on the breakpoint line. Drag a breakpoint up or down to a different step to change to a new control value. Drag a breakpoint to the left or right to adjust the timing of the stepped control change.