Do I need 2 jicofo instances?

We have users on 3 virtual hosts. I can only specify one domain in

org.jitsi.jicofo.auth.URL=XMPP:jitsi-meet.example.com

So how do I specify the other two domains so that users can create meetings?

There is no such option at the moment.

what is your best practice here?
how should users login? I have ldap working for the 3 domains.

Maybe have a separate deployments for every domain, but then people from different domains cannot talk to each other, there are not many options there.