CmdID / PowerShell / Cmdlets / Register
Register-SmsProxy
From the Windows Server PowerShell reference 8 parameters Its page in the reference
Parameters
-ComputerName, -CN-Credential, -C-EnableFirewall, -EF-Force, -F-OrchestratorComputerName, -OCN-OrchestratorPort, -OP-ProxyCredential, -PCR-ProxyPort, -PP