If you leave any of the boxes in 'Settings | Business Settings | Terms and Conditions' empty then the corresponding heading (e.g. 'Remittance Terms') will not appear in the HTML. However, if you wish to add your own Terms and Conditions entry you can fill in your text in an unused panel and then simply change the appearance of the title in the HTML.
Select 'Design | Text | Web Site | Misc.' and search for the heading you want to change.
Select 'Design | Text | Web Site | Misc.' and search for the heading you want to change.