Select multiple automation key points
Selecting multiple automation keys and move them or delete them is really necessary but I never found this feature it in Adobe Audition.
AdminMatt Stegner (Admin, Adobe DVA) commented
If you hold the keyboard modifier Shift, you can multi-select envelope points/keyframes, then manipulate them as a group. You can also select them a range between two point by holding the Shift key. There is no Marquee selection of envelope points/keyframes unfortunately.
You can also hold Command on Mac or Ctrl on Windows to deselect points.