hi! can someone link me to instructions on how to update a story on here?

http://www.mangago.me/read-manga/there_s_something_wrong_with_my_popularity/uu/ibx_chapter-17/pg-1/
At the bottom of this link it tells you how to add chapters and what not, I'm assuming it could be the same?

try Suujin's explanation: 
http://www.mangago.me/home/photo/5318652/