Is there an option in the Standard Application Online (SAO) to map to a question that asks for an IEP or 504 plan if families want to submit one?

The SAO does not contain any questions regarding IEPs or 504 plans. Per legal advice, SAO should not include any question that can create an unintentional bias, especially related to learning differences. Schools should not be asking this as part of their application. If it is going to be included on your direct application, it should be stated very clearly that it is optional and it would be worth having your school's lawyer weigh in.