EZCA guides you on how to create your certificate signing request (CSR) in the desired computer and then upload it to EZCA to request the certificate.
INFFILENAMEis the file name you just downloaded and
CSRFILENAMEis the file where you want the certificate signing request to be saved:
certreq.exe -new <INFFILENAME>.inf <CSRFILENAME>.csr
openssl req -new -newkey rsa:4096 -keyout certificate.key -out certificate.csr -subj /CN=ezssh.io