I would like to configure my DCS's SCEP operation for manual approval, in which the router uses SCEP to submit the request and the CA agent will manually approve the request and to modify the request (if needed).

Does anybody has any idea how to configure the DCS CA?

I am thinking to clone the caRouterCert profile.  I am not sure what to specify to enable agent to approve the incoming request. 
Am I in the right direction?