This feature is only available on ChronOS version 188.8.131.52 or higher. If you need to use this utility to calibrate your screen, please contact support for a firmware version that will support this.
If your Pro2 screen doesn't respond precisely so that the cursor is slightly offset from where you intended to touch, you can go to Settings > System > Admin > Screen to calibrate the screen.
When you tap the Screen option, the screen will go gray, and a red "crosshair" icon will appear in the upper left corner of the screen. As accurately as you can, tap the red icon, and it should turn white, then a new red icon will appear on the top right corner of the screen, then the bottom right, then the bottom left.
You may see a message that says "Missclick detected, restarting..." and all but the first crosshair will disappear. Keep tapping the icons until the calibration screen disappears. When the calibration screen disappears, your screen will now be calibrated. You can re-calibrate as many times as you find necessary.