Changing Portfolio slug

Hey guys! Thanks for this great theme!

I was just wondering if there was any way to change hte slug of the portfolio section to be something else. Right now my urls read http://riseswim.com/portfolio/jess-r when I would rather have them read http://riseswim.com/women-on-the-rise/jess-r.

Is there any way to do this? I don’t mind changing the core code but I couldn’t find it in the functions.php file.

Thanks!