zoom standalone version

[hcusa]

How can we host webinars within an organization that does not have internet access? Frequently we give talks on stage to an audience in a very large hall. What we need is each of the panelists joining (having their own window) the session. Each panelist has an independent hardwired camera on them. Easy to do if you have internet connection. How do you achieve this without an internet connection?  Zoom only seems to work with an internet connection. Can you get a non internet (local) version of Zoom?