You have to have the hardware in the car, available only in high trim levels like might need have augmented reality option or something. I am not sure but suspect the unsymmetrical notch in the black part in the middle top of the windscreen is for the dashcam camera
www.mbeqclub.com
I didn't know at time of car purchase that such an inbuilt feature existed so got an aftermarket dashcam instead with higher resolution plus backward facing camera too

MBUX Dashcam
Does anyone got Dashcam? And I mean Dashcam-application from Mercedes Store (your EQC need to have cameras).
I didn't know at time of car purchase that such an inbuilt feature existed so got an aftermarket dashcam instead with higher resolution plus backward facing camera too