Open the “pen tablet setting-button” windows.

1.      Choose the button 1 or 2

2.      Set the default to the pen/eraser toggle.

3.      Click Apply and OK buttons to exit.

When the digital pen is in working mode, press the barrel button to switch from pen/eraser mode. The screen will indicate current pen/eraser mode. You may assign the barrel button to a different action in the Pen Tablet button settings.