You can easily edit details for each section in your course. As part of editing details, you may need to create start and end dates for your section. Dates can be shorter than the course dates or overlap the section dates. Changing the section dates creates an override for the section dates, and students can only access the section during the specified section dates.

Note: Sections may be added by your institution's student information system (SIS).

You can add a course in your account in the Courses page.

Note: Courses can also be added through SIS Imports. Courses added manually in Canvas are not linked back to any SIS data (though they could be by associating an SIS ID) and are not affected by SIS imports.