Automating mixer parameters works in the same way as with other parameters. Automation is part of the audio track or Mix channel automation track. See “Recording parameter automation”.
A quick way to automate a parameter is to right-click (Win) or [Ctrl]-click (Mac) on the parameter and select “Edit Automation” from the context menu.
• When you select a sequencer track, the “Record Enable Parameter Automation” button is automatically enabled, allowing for parameter automation to be recorded. However, when recording automation for Audio Track channel strip parameters, you may want to disable the regular Record Enable button to avoid recording audio by mistake.