Adding Users to a file through the server


I'm using a piece of software that requires the database to have certain permissions set on the server. The document states that write access should be allowed for a specific user on the server. I am unable to figure out how to do this, and was hoping that someone here could help me!

The only permissions setting functionality in smartftp is chmod/permissions, but that does not seem to allow you to give permissions for a specific person.

I really would appreciate any help/assistance/advice that any of you could give me.

Thanks in advance.