How do I add a section to an event registration form?

To add a new section to your registration form, first ensure that you have the correct page selected by clicking on the page name displayed on the left-hand column (when selected, this will show the page name on the right-hand side as well).

Click the 'Add' button on the right again and select 'Section' and a new section will be displayed in the center of the page (at the top of the central area). The new section added will display a 'Drag Items Here' area - this allows you to easily see when a section currently has no fields added to it.