A video tutorial of this feature can also be found here: https://youtu.be/QX_tYc277Mw?list=PLrAXlRfWtWuNTp4URd1n8W5Ggy1U7wVEh

From any report category, to begin editing, make sure the Edit Comments button in the top section is indented. 

There will be several tools to the left of the comment sections. These tools allow you to add, delete, and change the order of your comments. There is a text box for editing the description text of that comment section, as well as a selector to choose how your comments are separated from one another. 

To edit your comments, double click on any comment and a new window will appear with a text box.

To duplicate comments, select the comment you wish to copy and use the copy and paste tools circled below.