how to show messages only to certain user group?

My question is somewhat related to this one:
http://vanillaforums.org/discussion/19546/guest-message-show-messages-to-guest-usergroup
I'm sorry if it has been answered already, I searched but couldn't find the answer.
I'd like to know how to edit view rights by user group for messages.
Is it possible?
0
Comments
You might be interested in this discussion: http://vanillaforums.org/discussion/28667/hide-show-pocket-based-on-user-role#latest