There might be the case when you don’t wish to chat with few people or you want to chat with only selected people , in that case, Facebook provides you a facility which enables you to choose the people with whom you want or don’t want to chat.
Follow these steps :
Step 1: Open your account on Facebook.
Step 2: Click on the “Chat” option which is present on the lower right side of your profile.
Step 3: There you will find an option called “Options”. (see the image below)
Step 4: There you will find an option for “Advanced Settings”, clicking on which gives you an interface where you can set with whom you want/don’t want to chat.
There you get three options :
a. Turn on chat for all friends except..(List those names with whom you dont want to chat).
b. Turn on chat for only some friends..(List only those names with whom you want to chat).
c. Turn off chat.
Step 5: Click Save and its done!!