A mandated arranger is a person or entity that has been given the responsibility of arranging something by law or mandate. Some synonyms for mandated arranger include authorized agent, official representative, legal custodian, or designated organizer. Another synonym for a mandated arranger is a trustee, which refers to a person or entity that has been appointed to manage property or assets on behalf of another party. Other similar terms include curator, guardian, steward, and executor, all of which imply a level of legal responsibility and obligation to act in the best interests of another party. Overall, a mandated arranger is someone upon whom legal responsibility has been bestowed.