When parents re-register, they should be able to add a sibling that wasn't in their account the year before.

Parents log in to re-register their child, but they may have a sibling for the next year. They should be able to add a sibling while they are re-registering because some schools have hundreds of students using the program and it is easier for parents and the school if the parents can add children to their existing accounts. It causes confusion when parents add a whole new account because there is a sibling. Parents should be able to add all necessary information instead of contacting the school to have to do it.