Add-ons or extracurricular activities can be selected by guardians while enrolling to your center.
First, set up the programs you'd like to include in your enrollment listing. Next, create your listing or edit an existing listing. Navigate to the third page of the edit listing screen called "Additional Charges". At the bottom of this screen, you'll see the Add-Ons section with a list of any programs you've created. You can also create a program on this screen by clicking "Add program". Select the checkbox next to any program that should appear as an option for a guardian to enroll in when applying to this specific listing. Once selected, click "Save and exit" at the top of the screen.
HERE is how to view students who are enrolled in a program.