Click ? (HELP) at the upper right and type "normalize." This doesn't work quite the way you might expect, so read carefully.

Adding to that Borgus1 showed.
The way I do pair nivelao audio by track.
In the audio control room click the Normalize button.
All clips will to match the volume.
If the volume is below normal, adjust the volume track, climb up to appear yellow peaks in the wave audio.
In my view volume is ideal position. AMD-FX 8350 / 8GB DDR3
SSD SUV400S37240G / 2-HD WD 1TB
AMD Radeon R9 270 / AOC M2470SWD
Windows 7-64 / PD16 Ultimate

Well, I can't seem to figure out how to do what I would like to do. Let me explain it, and maybe someone can help.

I place 10 clips on video/audio track 1, all consecutive clips. I add an mp3 song to music or voiceover track.

Since I will have the song playing most of the time, I would like to mute or lower the volume of all the clips in track 1. But then for example on clip 4, I want to hear the original audio, so I would like that volume to come up from -infinity to 0 for a few seconds, then back to -infinity. During that short duration, the song will be lowered a bit so I can hear original audio on track 1.

I tried a few ways, but still can't get it to work how I envision it.

1) I place scrubber at beginning of movie, and use the master gain to set entire track to -infinity. But when I go to point where I want to raise volume, it stays stuck at -infinity.

2) The help instructions state "Note: if you would like to set the volume for an entire clip, select it in the timeline and then ensure the timeline slider is at the beginning of the clip." When I try this, and lower the master volume to -infinity, only the 1st frame of the clip lowers completely, and the last frame of the clip is ramped up to 0. Am I misreading or mis-interpreting the instructions, because it doesn't seem to work the way it is stated.

So what I am asking is how to I bring the volume or gain (terminology?) down for the entire track at the beginning of my project, then selective raise the volume at a few select portions of a clip, then lower it back to -infinity?

Thanks again for your help.

Here's a more direct approach that can be handled right on the timeline...

Look at the audio track. Note that each clip has a horizontal line running through its middle.
Note the dots at the beginning and end of that line in each clip. Those are keyframes, and can be dragged up/down to raise/lower gain.

To create a new keyframe mouse over the line - anywhere, then left-click. Lower the gain by dragging the new keyframe down.

If you get lost, right-click the line and RESTORE TO ORIGINAL VOLUME LEVEL.

If you want to affect the level of ALL clips simultaneously, open the audio room (sliders icon at left) and move the HORIZONTAL slider on the active channel. You'll note that the horizontal line on the timeline moves up and down in accord.

In pinnacle studio timeline view, I think you are talking about clicking on the audio volume level line and creating those orange squares and then dragging that part of the line between the squares up or down to raise or lower volume level on that part of the audio.

In PD, unable to do the same thing. Must do it on each individual clip as you have found. Here is good link to do what you are used to. Instead of orange colored squares you create white balls on the audio volume level line:
http://forum.cyberlink.com/forum/posts/list/41499.page#213998

Hope this helps...