When you follow the instructions to enter your team information, you may be pointed to these instructions to register for a tournament (otherwise, follow your region's instructions).
If you are signing up a team, and the tournament requires adult participation (e.g. team-supplied Appraiser, Volunteer), gather the name, email, and phone number for each adult before registering. If you don't have an email or phone number for someone, don't use yours. If you don't have either, you're not ready to proceed.