This task is really simple, just drag folder and drop to left panel.
I was trying to use bookmark (CTRL + D) feature but it never worked for me 🙁
Posted by: Vivek Gite
The author is the creator of nixCraft and a seasoned sysadmin and a trainer for the Linux operating system/Unix shell scripting. He has worked with global clients and in various industries, including IT, education, defense and space research, and the nonprofit sector. Follow him on Twitter, Facebook, Google+.