camera display features appear in HDMI in

How can I suppress display features on my HDMI input using my new Atem mini pro ISO.
My Intensity extrem HDMI input does that automatically

There is usually a setting on the camera that controls whether to output on-screen displays to the HDMI output or to output a clean feed instead.

This isn't really a feature of the input device since the input device can only display what the camera is sending it.

Thank you for your answert butI don't understand why my Intensity Extreme supresses the display features of the cam with the same adjustment and I get a clear signal