[Jit.si meet] How to use a second camera e.g USB Camera

Win 10, Chrome Browser, USB Camera and build in Laptop Camera

I would like to use a second camera during a Jitsi meet conference an switch the cameras using the setting in Jitsimeet.
It works if I just plug in the USB Camera but the image of the is mirrored.
If I use the Win App “Camera” the image is correct but Jitsimeet creates an error message “failed to access your camera”. This is als the case if I use the program “manycam”

The basic idea is to switch during a lesson between the face of the teacher and text which can be createt by the teacher.

Thanks for a solution