Setting up Projects for Tempo Changes
When you create a new project, the project tempo is automatically set to fixed tempo mode. If your music contains tempo changes, you must set your project to tempo track mode.
Procedure
To set your project to tempo track mode, do one of the following:
On the Transport panel, activate Activate Tempo Track.
Select Activate Tempo Track.
and activate
Result
The project tempo is now set up to follow the tempo track.
All tracks that are set to musical (tempo-related) time base follow any tempo changes that you add on the tempo track.