adding social media links to primary menu

I am trying to put social links on my main menu in the header. I have the links showing up, but cannot link them to anything. Within the Clean Enterprise customization I navigated here: Customize>Menus>Main Menu Here I clicked on <Social on Primary Menu>. That immediately puts a series of link symbols on the main menu. I have searched for probably an hour to find where to add in links like Twitter, LinkedIn, FB, etc to show in those links. Nothing seems to be available. I can do a Custom Link on the Main Menu, for example, LinkedIn, but it does not provide an icon, nor is it part of the Social Menu. Very confusing. I should add that when I click on one of the links, it will take me to a different page on my site. For example, my about page, or my contact page. I did not add those links to the graphic. Is this only available in the Pro version of Clean Enterprise?