How do I add the comment section to certain pages and not my whole website

Hello,

I am trying to figure out how to add the comments section to certain pages and not the entire website. I clicked something in the beginning to turn off comments because they were on all the pages. I activated the JetPack comments module, but can't figure out how to add comments to certain pages. I have the Pitch template. Any help would be greatly appreciated! http://www.opposingforcesmedia.com

Thank you,
Alex