How to appear offline on facebook

Facebook is not entirelly about play, there are alot of productive things to do if you know your way around it . This would be marketers and promoters . For those helping companies have an online presence and those selling various products . If your are on facebook to do business sometimes chat can interfere with your productive work.
To have your own quite time of facebook without chat pokes
1. Open the chat window
2. Click on the settings icon located on the upper right corner
3. Go to advanced settings -here you can customise your chat to appear offline to certain people.