They say a picture is worth a thousand words. In this case a multi-megabyte video is worth a couple of hundred words:
You can use the motion bar and the filter bar in Clip Keyframes to move all the keyframes in a clip at the same time. You can also move all the audio level keyframes in a clip at the same time using the slip tool on the graph in the viewer.
That doesn’t quite make sense, so take a look at the video in HD mode, which means following the link to the HD video on the Vimeo site. Click the Vimeo logo in the controller bar to go to the page on the site with the HD version. Click the four-arrow icon on the right of the controller bar to scale the video up to 720p.
As a shortcut, you can choose which elements appear in Clip Keyframes mode by control- (or right-) clicking the Toggle Clip Keyframes button in the bottom-left of the Timeline window.