There is no way for divorced parents to have separate accounts/logins/passwords connected to the same children. This scenario could potentially cause more problems than solutions, and we want to ensure we minimize double entries.
We suggest the parents get a shared free email account for your organization only, such as from Gmail or Yahoo, allowing them to share the same email and password to manage their child's sports life and nothing else.
It also allows them both to place a credit card on file for potentially taking turns paying. While this does mean either one could delete the other's card or use it to pay for team and meet fees, they could not use the card for anything else, nor could they see the entire credit card number. You can prevent users from being able to remove credit cards by going from Business Tools > Billing Manager > Billing Setup > Wallet and ensuring the Payment Method Removal options are unchecked.
Once parents understand that the information relates to their children only, they seem OK to share the account.
For parents who insist that that is not an option—that they MUST have separate accounts—only ONE account can be connected to the kids. The account not attached to the kids can still log in to view upcoming events, but they will not be able to register or make a payment.