GarageBand for Mac: Add and adjust automation points
To create changes over time to volume, pan, and effects settings, you add automation points to a track’s automation curve at different places, and then adjust the automation points so the value of the setting changes. You can adjust automation points by moving them up or down to a new value, or left or right to a new point in the timeline. Numerical values are displayed alongside each automation point.
Note: You can Use automation in the Piano Roll Editor to automate Smart Control events on a region basis.
Add one or more automation points to an automation curve
To add an automation point to an empty automation curve: Click anywhere in the automation track.
This action adds an automation point at the project start position, using the current fader value.
To add an automation point to an existing automation curve: Click the automation curve, or double-click an empty area of the automation track.
An automation point is added at the clicked position.
Adjust automation points
To move an automation point: Drag it up or down.
To move an automation point to a different point in the timeline: Drag it left or right. Use the ruler to make sure automation points are aligned with a beat or measure.