**** When purchasing an on-line class, you no longer use an enrollment key to enroll in a course. ****
If you are purchasing a class for yourself, simply purchase the course and go to My Account/My Classes and you will see the icon for the class you selected. Click on it and you are in the class.
If you purchasing multiple classes for others to complete, first check the Order Class For Others box, then select the number of seats needed and complete the purchase. After the purchase, you can enroll students by selecting Enroll Students under My Account in the top menu section shown in orange.
Make sure the students set up an account by registering on the website before attempting to enroll them in a course.