My question is how do set the home path for the account?
I want to work in a subfolder from the home folder.
The home path for an account needs to be set of the server.
But you do not need to change a home path to work with files in another folder.
Just use an absolute path to the other folder in all calls to WinSCP .NET assembly methods.
The assembly does not have a concept of a working directory, if that's what your question is actually about.