I’m sure other people have discovered this but when I was Googling for it, I had no joy so for anyone who wants to know, here we go.
Firstly, you need to create some friend groups, including one of people from whom you might want to hide from time to time.
In the Chat popup, you’ll see at the top of each group what looks like a little slider. Now, look at this screenshot:
![[Chat Popup]](http://jamesthevicar.com/images/png/facebook-chat-limited-offline.png)
Click the slider to go offline and online to certain groups.
Simples!

