Hello there, @steven_kominsky ...
I'm not sure if your Chromebook browser has this built in to the browser (I don't own a Chromebook, so I'm just basing this on my Chrome browser on my Windows 10 laptop)... When you are to the point of selecting your web cam, on the far right side of your address bar in the browser, do you have a star icon? Just to the left of that icon, does a little video camera icon show up? If so, try clicking on that icon to see if you have any options to select your camera.
Again, this is a very large assumption on my part...so it may not even be an option. But, I hope it may be of help to you, Steven. Let us know if you have any questions. Be well, and stay safe!
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