Final answer:
The ABO Surveillance Program Manager is assigned by an organization's leadership through formal documentation, usually found in a Quality Management System or internal directive.
Step-by-step explanation:
The ABO Surveillance Program Manager is designated by the organization's top leadership, typically through an official document, such as an internal memo or organizational directive. This individual is usually charged with overseeing the ABO blood group surveillance or compliance program, a critical component in healthcare settings, particularly in blood banks and transfusion services. The designation is generally articulated within the organization's policies, which may be outlined in a Quality Management System or similar formal documentation.