adding some shortcut buttons

is there is away to put the VFB in the right click context menu or just make a toolbar somewhere with it?

You need a macroscript that will call CoronaRenderer.CoronaFp.showVfb(true)

As Ondra posted (while I was typing) basically it´s a one-liner:

CoronaRenderer.CoronaFp.showVfb(true)

To very quickly create a button:

  1. Open MaxScript listener
  2. Paste that line
  3. Mark the line in the listener window
  4. Drag to a Toolbar, done.

But also have a look at this:

The show vfb button in this toolbar does further checks (also checks for current renderer and some more)

Good Luck!

Just awesome!!! Thanks guys