Is enrolling the beta testers a separate step from selecting the Auto Enroll and Notify students by email options step? In other words, would it be correct to say "Then, you can enroll the beta testers by using the Auto Enroll and Notify students by email options"? If not, would it be correct to say "Then, you can enter the email addresses of your beta testers in <somewhere>, and then select the Auto Enroll and Notify students by email options to add them to your course"?