some changes in UtChat

[morphebak]

hello,
I'm Atef : an engineering student in software engineering.
I used the component "utChat" and it is really interesting.
But I want to make some changes if you have a complete tutorial
, Is what you can give me.
otherwise I would limit the number of users to 3 per exple, quesque
I should do?
I want to block the chat room in the public for all users
except the administrator.

Thank all