Yes that's the one. On mine I just push them down and at the same time and pull the drawer forward. It's kind of a 3-handed job 
I was just thinking if the rails are mounted upside down then pull up instead of pushing down.
Ed.
Edit: I just double checked and it appears that you pull one clip up and push the other down. 
Edited By Ed Duffner on 07/11/2015 08:43:48