Time, Tempo, and Meter : Tempo
 
Tempo
 
Tempo Events
Inserting Tempo Events
Moving and Editing Tempo Events
Tap Tempo
Tempo and Automation Drift (With Sample-Based Clips on Tick-Based Tracks Only)
Tempo Changes and Tick-Based Elastic Audio Tracks
Conform to Tempo
The Tempo ruler lets you edit Tempo events one at a time or according to tempo curves. You can edit tempo visually in the Tempo Editor, or make precise changes in tempo using the Tempo Operations window.
To display the Tempo ruler:
*Select View > Rulers > Tempo.
*To set the default project tempo, see “Setting the Project Meter and Tempo” on page 226.