On Evren, you can find a quick brightness slider in the Action Center. Follow the steps in this article to 

learn how to change screen brightness.

1. Select Action Center on the right side of the taskbar, and click on the icon.

2. Next, navigate and click Battery and Brightness.

3. Move the Display Brightness slider to adjust the brightness based on your preference.

4. For more settings selection, please click on the Settings icon on the top right.

5. A Configure - System Settings Module box shall appear (as per the screenshot below) 

    and variety of settings options at your disposal.