Setting white/black points in LRCC on at tablet

[Sonesta]

You know how you can set your white/black points in LR Classic by clicking Alt and the slider and adjusting until you see the corresponding points light up in the photo?

How can I do that in LRCC on a tablet?

[Conrad_C]

1. Start dragging a slider like Whites or Blacks with one finger, and don't release it.
2. Press a second finger of either hand anywhere on the image, and keep dragging the slider with the first finger.

As long as a second finger is pressed on the image, you will see the clipping display.