To change the start frame of a track without changing the track's length:
- Drag the track to the left or the right.
To change the start or end frame of a track:
- Hold down Ctrl+Alt, then drag the track's start frame or end frame.
To change the start or end frame of a track by using the keyboard:
- Double-click the frame count at the center of the track.
- In the edit field, enter the new start frame or end frame value, then press Enter.
You can press Esc to cancel this operation.