To revise an existing course (quarter offered, course component, repeatable for credit, course title, course description) use the Add/Update Course Catalog web form in PeopleSoft.
To revise course scheduling (room assignment, enrollment caps, instructor/TA listing, add/delete a section, instructor consent, time/date, units offered, grading basis) use the CPS CLSS system. Consult the Class Scheduling Form instructions for details.
If you need to be granted access to Courses in PeopleSoft, send email to jessicagoudy@stanford.edu and include your department and role details with your request.