49 CFR § 382.715
Authorization to enter information into the Clearinghouse
November 18, 2020
(a) C/TPAs. No C/TPA or other service agent may enter information into the Clearinghouse on an employer's behalf unless the employer designates the C/TPA or other service agent.
(b) SAPs. A driver must designate a SAP before that SAP can enter any information about the driver's return-to-duty process into the Clearinghouse.