Using ftp in my website directory var/www/html

I installed the FTP as it shown in the tutorials. The problem is they are just showing it as a new user in the home directory.

I want to use it on my apache website, var/www/html directory. How can i make it possible. Its not shown in the tutorials.

here is the tutorial that I read: https://www.digitalocean.com/community/tutorials/how-to-set-up-vsftpd-on-ubuntu-12-04