Update: Enrolling a Student is now done on the Student Page Panel. This document has not been uddate for version 4.
Click on Students from the menu, the select the Student. Edit an existing Student.
When creating a new Student you must finish adding the student first.
Click on the Enrollment tab.
Select the check boxes that correspond to the classes you’d like this student to be enrolled in.
Click the Update This Student to save the Enrollment.