Adding SAN to CSR?

[Scepticalist]

Hi - I'm Is there an equivalent in PSPKI of the following, which amends a CSR and authorises it, so that the new CSR can be submitted later?

certreq -policy -config CAserver/CAInstance PathToCSR.csr InfFilewithSANsettings.inf PathToNewCSRFile.csr

Where the Inf file is formatted as:

[Extensions]
2.5.29.17 = {"text"}
_continue_ = {dns="san1.fqdn"&"}

etc

Loving your module, many thanks