Please try the following steps that can help you customize the press keys of the pen.
1.Open the Bosto driver and click on 'Drawing Settings'
![How to customize pen press keys? How to customize pen press keys?]()
2.Click on 'Mouse Right Click' or 'Mouse Left Click' for setting as mouse function.
![How to customize pen press keys? How to customize pen press keys?]()
3.Click on 'Keyboard' for setting as letter shortcuts function.
![How to customize pen press keys? How to customize pen press keys?]()
![How to customize pen press keys? How to customize pen press keys?]()
![How to customize pen press keys? How to customize pen press keys?]()