Facebook is a great and best way to connect with people and friends. Facebook is great for it’s great and best functions and Privacy. If you want to open chat for some people but not for all. If you want it you have to follow some steps that are following :-
At first you have to open Facebook on your computer but if you haven’t computer then no problem go to this page to Open Facebook like PC or computer on your mobile and open Facebook when the window opened login to your Facebook account when you got logged in you can see that your Facebook opened like Computer. You can see a chat window in right end. Then click on settings that in chat window like this
And here you can see advanced settings option click on it wait for sometime after sometime you will see a window then select from three option you like.