There are many methods to change the volume of specific items or groups of items within VideoPad.

Changing the volume of individual clips

Clip Volume Dialog

The clip volume dialog can be opened by pressing the Volume button located in the bottom left corner of all audio track clips located within any sequence . You can also right-click on the audio clip and select Adjust clip volume... from the context menu.
Use the volume control slider to increase or decrease the volume. Check the Mute clip checkbox if you don’t want to hear the audio for this clip. Click the OK button to save any volume adjustments to the clip.

Fade Points

Fade points can be used to apply a smooth increase or decrease to a clip's volume applied across a desired duration.

Audio Effects

Audio effects such as Amplify and Compressor can be used to increase, decrease, and limit the volume of clips in assorted ways.

Changing the volume of whole tracks

In timeline mode, each track has a volume slider and a stereo pan slider. This volume and pan is applied to all audio clips on the track.