You can add audio control points to your audio clips on the Timeline to raise and lower the volume at your desired intervals.
To Raise or Lower the Volume of Your Audio Clip:
1. Add your audio clip to the Timeline.
2. At the beginning of the audio clip on the Timeline, you will see a green dot with a line connecting it to another green dot at the end of the clip.Select the green line and drag it up to raise the volume, or down to lower the volume.