As of 5/25/2020 Coeus S2S functions have retired with the changeover to Grants.gov Forms-F (not supported in Coeus).  No S2S forms are in use with Coeus as of this date. 

To enter Subawards into Coeus manually, please see this ERAF newsletter article.  See also, p. 146 of the Coeus Premium Proposal Guide.