Yes, you can change the Classes your registered for at the Convention. If you log into your account on the ISPLS website, you should start on the “Manage Profile” screen but if not the link to that is on the top left near the search bar.

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Click on “Event Registrations,” and then the little pencil / paper icon on the 2024 ISPLS Annual Convention listing. It will take you to the Convention Registration page where you can adjust your selections. When you’re done, click on “Save & Proceed To Checkout” at the bottom and it’ll take you to a confirmation page that your registration has been updated.