How to setup pen pressure on GIMP 2.10
1. Make sure you have installed the latest driver from the site and can see a tablet icon in the system tray.
2. Open GIMP 2.10 then click Edit – Input Device.
3. On the Configure Input Device tab, please click Pentablet Stylus Pen then set Screen and click Save & Close buttons to exit.
4. Click the Dynamics icon then choice Pressure Opacity or Pressure Size.