The user manual of the SFTP-package you install should tell all you need to know to run it. An example of such a package (not a recommendation, just the first google hit): https://www.bitvise.com/ssh-server?gclid=CNqOpdv7o8oCFefTcgodtZIIXg
Can you please help me to enable SFTP access to my PC for specific users and also below things on which I require help:
1) Public IP of partner who connects to my PC to be configured in my PC.
2) Port 22 to be configured for doing SFTP.