I was recently really busy working on some visuals for Hilton Hotels and because I was using 3DS Max and VRay hence I have a new idea for the post to share with you.
To install that script vcm.mcr just drop and drop it to the 3DS Max window or Run it from the MAXScript menu. Apparently nothing will happen but a new position named VRay Camera Manager will be added to a list of available commands in the Customize User Interface window on the Toolbar tab. You can drag and drop this command to any of your open toolbars.
Tested in in Max 2012, 2013, 2014 but should work in earlier versions
VRay 2.0 or higher