Acceso restringido

Hi
First of all I want to thank for the tutorials and all the information that I found here I could install jitsi-meet on a server with ubuntu 16.04 and get functional

but i want to make access restricted.

example an administrator who can create only 1 room

and that it can invite only 20 or 30 participants

I am very new in this subject of programming and the servers I manage them but I still do not understand many things I would appreciate who can help me since I am in the middle of nowhere since I usually do web pages and this is new for me

thank you very much for reading