Set group-write permissions on a USB device.
A USB connected LCD panel will most likely require having its permissions modified for lcdd to write to it. Enabling this option sets group-write permissions on the device identified by services.hardware.lcd.usbVid and services.hardware.lcd.usbPid. In order to find the values, you can run the lsusb command. Example output:
Bus 005 Device 002: ID 0403:c630 Future Technology Devices International, Ltd lcd2usb interface
In this case the vendor id is 0403 and the product id is c630.