If you have a cell phone number on file, you can add an athlete to your roster just by sending a text message.
Simply send a text message to 6473606198 with the text "ADD Cindy Louis" (replacing Cindy Louis with the athlete's name of course) and it will be automatically added to your roster.
You will still need to login to ensure the new athlete has a birth date on file, is attached to a team, etc.