Program Enrolment - My Education Plan - instructions for students

Just a minor point here, but still.....

At the top of the My Education Plan (MEP) page in student self-service for Program Enrollment, the instructions for students say (see attachment):

"Use the Education Plan to review program requirements and select optional courses. Use the action column to add or remove courses. The Update Planner button saves your selections."

But is this really true? Which courses the student can select will depend on how I have defined my enrollment categories. If I have a enrollment category for mandatory courses, I can either define its settings so that (1) mandatory courses are automatically seeded to the APT and/or (2) students can add/remove them in self-service.