Once you create your sections and populate them with forms, you may choose to re-order the sections. To do this, navigate to the Layout tab (highlighted in green, below). The sections will be listed on the left side of the screen in the order you created them (highlighted in red, below).
To re-order the sections, simply drag and drop the section names in the desired order. In the example above, the section named Ending Directions should appear after the section named Part II. So, the user is dragging the name Ending Directions (A) below the name Part II (B):
After dropping the name, Ending Directions now appears below Part II.