How to enable Lobby in vanilla installation?

How do I enable the lobby feature in regular installation ?

It is easy in the docker version - ENABLE_LOBBY=1

But how do I enable it in the regular version ?

I reinstalled Jitsi Meet on Ubuntu 20.04 from repo lately. I don’t find any information in my notes on modifying config files for the lobby feature so I assume it should be enabled by default…!?

Clean install using prosody 0.11.x will have it enabled by default.
Does not work with prosody below that version

@Freddie @metadata @rn1984 sorry to trouble you, can you please help me with this ? stuck again

What is that? Is it related to jitsi?