The grade level must be defined on the Elem Grade tab before you can add course information on this tab.

IMPORTANT: Do not include one-semester courses when setting up courses by grade level. Instead, add one-semester courses as needed using Maintenance > Student > Group Maint > Add/Delete Courses. You can verify the number of semesters for the course using Nbr Sem on Grade Reporting > Maintenance > Master Schedule > District Schedule.