CMS Article read permissions

[محروم.كوم]

How do you give articles read permissions to a certain user group, by that i mean if i have a welcome message on the front page that i only want unregistered users to see. Registered users/ members i don't want them to see that article.

Can someone tell me how this is done, i see when you create the article there is read permissions listed at the bottom but i am confused on how to change them. __DEFINE_LIKE_SHARE__