Multiple TLS/SSL Certificate Deployment - Linux using CSV file

Multiple TLS/SSL Certificate Deployment - Linux using CSV file

Could you help me to understand and construct CSV file where to describe multiple Linux servers.
I am speaking for this screen:

I see following help information:
Manually enter the complete details as mentioned below in the .CSV file::
        e.g., Server name, port number(optional), user name, password, path
        Note: For file-based deployment, the Common Name will be used as the file name.

I would like to use SSH key instead Password and also is there an option the SSH key to be also stored into tool only to point it?

Thank you in advance.

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