how to appear offline to only one group of friend in facebook ? help please..?

[shigenoi]

i already made a group of friends in facebook but i dunno how to appear offline to only this group. anyone knows about it ?

[Graham]

In the chat, you will notice the groups that you have created, next to each group's name will be a green and white slider style icon - if you click that, the group will no longer be able to see that you are online

with facebook lately though it doesn't always work properly, meaning you may have to reload the page or go to the facebook home page

if you are successful in appearing offline to them, the icon should change to gray and white