It’s definitely possible to do this using the likes of NDI. As RichieTee suggests, the key is how you are getting the feeds into OBS. Once the application the speakers are using supports it you can easily add each of their camera feeds as a separate source in a scene. Skype supports NDI and I believe Teams now supports it as well, not sure about Zoom but I believe it does, haven’t tried it from there. i mention these because they are very widely used now but lots of other alternatives out there as well. Bottom line….you can achieve what you want, just lookup and follow the NDI Plugin instructions. You can also do it without NDI and simply using multiple “window captures“ but personally I think using NDI is easiest, at least for me. Hope that helps.