What is required regarding documentation of the authorized representative's authority?

The requirement regarding the documentation of the authorized representative's authority being available upon request but not required for enrollment establishes a balance between accessibility and compliance. This means that while the documentation is necessary to demonstrate the representative's right to act on behalf of an individual, it does not have to be submitted with the enrollment application itself. Instead, having it readily accessible ensures that if there is any question or need for verification, it can be provided at that time. This facilitates a smoother enrollment process while still maintaining the integrity of authorization, allowing individuals to secure representation without looming bureaucratic hurdles from the start.

Other options suggest varying requirements that imply immediate submission or permanent filing, which may unnecessarily complicate the enrollment process or delay the approvals, while the flexibility of availability upon request helps streamline operations.