Jackrabbit gives you the option to create a future enrollment for students.
The ability to enroll a student with a future date is controlled by the Allow Future Enrollments setting.
Once a future enrollment has been created there are several places in Jackrabbit where future enrollments are displayed.
Future enrollments can be deleted from several areas in Jackrabbit.
The best way to track future enrollments in Jackrabbit is with the All Students page.