Yes, it's easy to add, remove, or move a heading up or down!

First, click the Headings button (top-right of page). You'll see two columns: Available Headings and Assigned Headings. Only the headings in the Assigned column will appear in your resume. 

To Add a Heading:  Select the heading you want from the Available column, then click the right arrow (located between the columns) to move it into the Assigned column. You may also write your own Custom heading.

To Change the Order of Headings:  Use the up & down arrows on the far right to move a heading to a different position on the resume. (A newly assigned heading starts on the bottom and you move it up as needed.)

To Remove a Heading: Select the heading you want to remove from the Assigned column, then click the left arrow button to move it into the Available column. Any text associated with the removed heading will also be removed. (It will come back if you reassign the heading.) To use existing text under a different heading, copy the text before removing the heading, then paste it into the new heading window.