Sections can be created, deleted and reordered.
To manage the view of your sections, you can use the zoom, view and collapsed/expanded views using the three buttons at the top:
Experiment with the buttons to see what they do.
To create a section, scroll to the bottom and press the Add Section button.
To change the section order, the easiest way is to press COLLAPSE ALL and simply drag and drop the sections into the order you wish them to be output in.
To delete a section, expand it using the + sign, and use the Delete section action:
Remember that section movements are dynamically saved.