If you are part of a course using an Ethics-LX simulation you need a Group Code. This code identifies you as part of your course for your instructor. Contact your instructor to get your Group Code if you don't have it and are meant to register now.
Coupon Codes are not required, however, you may have one that was purchased from your bookstore with or without a textbook, or it was provided to you by your organization. If you have one it will act as a form of payment (access code) or will provide a discount (discount code), either way it is entered during the checkout process as outlined in the Simulation Player Guide. If you don't have one, simply continue on to pay for the simulation using your credit card.