What should be the way to manage large number of users in a conference

Hello Everyone!

I wanted to have a conference, say we have 15 teachers and 1000 students, What is recommended?

Also I read that we can livestream so what’s the easiest way to livestream to youtube or custom player.
Students will only WATCH and not participate. Since Start a live stream button is not visible for me.

Screenshot 2020-04-27 at 8.06.14 PM

Could you please suggest? (I’m using my own server on google cloud)