If you need to access the display settings of your Xeneon monitor, there are two ways to do so:
If you want to use iCUE to control the display settings, make sure you have the latest version of iCUE installed and that your monitor is connected to your PC system via USB.
If you want to use the joystick, you can press down on the joystick to open the display settings. You can also move the joystick in a certain direction to open specific settings: