How to turn comments off?

Greetings!

I am out of luck! I've spent an hour trying to find an answer to turn the comment off in my "About Us", "Contact Us" and other web pages. I did try to look into Wordpress settings. I know I've saw it before but now it's not there. I wonder why? Is it because the theme I bought from here that changed the templates? I even tried to install several pages templates to see if it would work but no.

Your help is greatly appreciated.

Best,

Brad