The authority of the Secretary to appoint an individual other than the contracting officer to serve as the source selection authority for a particular acquisition or group of acquisitions is delegated to the SPE and is further delegated to the DSPE. If an HCA wishes to designate an individual other than the delegated contracting officer as the source selection authority for a particular acquisition or group of acquisitions, the HCA shall prepare a request and justification and shall submit the request through channels to the DSPE for approval.