All you have to do to update your company profile, terms and conditions, and privacy policy is select the "Design" tab and then click on "Pages". From there, select the page you would like to update and click on the "Edit" button. 

After you edit the pages, you also need to re-link the page to the navigation. Please go to Design->Navigation->Edit the link. Re-link the page, then they will show up on your store front.