Getting a video conference system up and running in such a short time is easy with Jitsi Meet, a Free and Open Source Software. Successful installation will give you a voice, video, chat and screen sharing service. Not only that you can use it right away, you can also take a look at their source codes and customize it to suit your needs relatively easy.

Let’s do it. Prepare an Ubuntu Server 18.04, get it online with IP public, set DNS and point a hostname/domain to it. Login to your server via SSH. Once you logged in you can begin Jitsi Meet installation.