To prevent a friend or group of friends from calling or chatting with you:
- Create a friend list that includes the people you’d like to prevent from chatting with you. You can also use any existing friend list you’ve created.
- Click the
in the bottom right corner of the messaging sidebar.
- Select Limit Availability...
- Check the box next to the friend list you don’t want to be available to chat with and click Close. You can also select “Only make me available to:” from the menu and check off the friend lists you want to be able to chat with.