This video demonstrates free software to switch and stream multiple cameras live to youtube or other online streamer. The equipment used to stream are 2 logitech webcams ~$100 1 laptop web cam, a 5 year old HP computer and free OBS software.
If OBS doesn’t work you can try wirecast see affiliate link below for details:
http://telestream.pxf.io/c/365155/319936/4900
https://www.amazon.com/shop/sterlingteaches
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