Edward Troxel @jetdv wrote a script for me, some time ago, to apply auto level/balance to selected events on the timeline with one click (without opening the CGP). This is the function I believe @BruceUSA is looking for. This script still works in VP23. So auto level/balance feature must still bepresent in VP23.
@BruceUSA The Color Curves effect has auto adjustments as does Brightness Contrast. I was thinking that I could use a LUT, but that doesn't work in the CGP in VP23. I think that has been reported already. The LUT fx in Video Effects works.