Yes! Your ONSCREEN device can automatically turn on TVs and switch TV inputs, to allow the video call to show up automatically. To do this, make sure that you've completed the HDMI Setup instructions, found on this page.
Now, whenever you make or answer a call, your TV will switch to the HDMI port designated for the ONSCREEN device. When the call ends, it will switch back to the port you chose. This also applies to Zoom meetings, Daily Updates, and the YouTube Sharing feature.