Sections of a Course may be edited by faculty or staff identified as Instructors for that Section. (Note, only Administrators may edit a Course once it has been created.)
Once you are logged in, find the Section of the Course you wish to edit. This is most easily accomplished by navigating first to the Activity in question, viewing the Courses tab, and selecting the relevant section from the Courses view. You can also use the Search to identify the Section directly.
Once you are viewing the Section you wish to edit, select Edit.
Make the desired updates to your Course Section, and select Save.