Apple Logic Pro 9 - Manual (Page 811)

2 Click the Arrange tab, then adjust the Regions and Other Data sliders in the Automation
Transparency section.
You also have the option of viewing each automation parameter on its own subtrack,
making it easier to see what is being controlled.
To view automation data on subtracks
µ
Click the disclosure triangle to the lower left of a track name.
This opens a separate automation sub-lane, below the track.
Logic Pro automatically sets the automation parameter type of the new automation lane
to a type that’s already recorded, but not currently shown. The active automation
parameter remains on the top track. Repeated clicks on the disclosure triangle open
further automation subtracks.
811 Chapter 28 Working with Automation