Demo or Unsecure Room on a Secure Server

We are running a secure server.
We’ve set it up so that all rooms have to be activated by an admin. This is all working perfectly.

Now what we’d like is a demo room that can be started anonymously. The idea is that this room could be used as a system test for participants before joining a secure conference.

Is this possible?

Thanks in advance.

What about the pre-join screen, isn’t that enough to setup background and devices?

@damencho That’s what we’ve been using.
We have some users that are not very tech savvy - and they find it confusing when they try to join and then give up when asked whether they are the host.

And what will be the difference?