Touch screen

If your printer has the xLCD, you can navigate it by using the touchscreen. Note that some functions will still need the knob, such as setting the target temperature manually or while moving with any of the axes. The feature is available from firmware 6.0.0 and successive versions. 

Enabling the touch function

The touch feature needs to be manually enabled. For that, go into the printer menu to Settings -> User interface -> Touch.

Screenshot from the Original Prusa MK4

Touch Sig Workaround

If there is a lot of delay between touching the screen and the action you selected, or multiple touches generate just one action, activate the function Touch Sig Workaround in Settings -> User interface.

Screenshot from the Original Prusa MK4