How to use a shared contact list in Jabber clients?

Question

XMPP

The organization decided to install Jabber clients using the jabber server jabber.ru . We decided to use Gajim as an email client.
How to set up a contact list (roster) in Jabber clients, which would be automatically loaded when opened, so as not to run through users and manually add users to each other?
There are about 100 users. I won't go through all the users and add them to each other.

Answer 1

Isn't it easier to use your Jabber server?