A section is the top-level category of content in your edX course. It can represent a time period, a chapter in your textbook, a course concept, or another organizing principle. It might contain one or more subsections, each with any number of units.
Students see sections in the Courseware tab on the left-hand side of the screen (in the accordion). They can expand one section at a time to see its contents. Adding a section is simple and straightforward, as follows: