I just calibrated my 65VT30 and I was able to adjust both W/B and Gamma 10 points in the non-SM menus. I think the VTs have the Pro settings while some of the other models do not.
Go into Menu -> Picture -> Pro Settings
10 Point W/B is located in the W/B detail adjustment menu
10 Point Gamma is located under Gamma detail adjustment
For both menus the Input signal level defines which of points you are adjusting (10IRE-100IRE).
Does this help you? I am a newbie, so it is possible that I did it wrong too. My picture looks fantastic though!