To use the Windows 11 multi-app camera feature, join the Windows Insider Program and install Insider Preview Build 26120.2702. Then go to Settings > Bluetooth & devices > Cameras, select your camera, ...
Once you have the "Programs and Features" section of the Control Panel app open, scroll through the list to find the program ...
You can turn on the camera on your Windows computer immediately using the built-in Camera app, or another app that uses it.