password file sharing

Is this over a network or multiple users on the same machine?

Do you have a domain server, or a workgroup?

Then you will need to set up accounts for each user on each machine that has folders you want them to be able to access, and then allow these accounts to access the desired folders by setting the proper permissions.

First, make sure the user accounts can access the folders locally when logged in locally. You can test this yourself by logging in as them.

They will need to enter username/password when they first access the shared folder from the remote machine. If the username OR password is different between the two machines, the access will have to be set up for loggin in with a different username/password (different from the local machine). This will probably be the general case, or else you will have to ensure passwords are kept in sync, if they are ever changed.

I don't THINK you can have some users access without passwords while requiring others to use passwords, but I might be wrong... I think it is one or the other.

Not having to screw around with all this rigamarole is why people spend extra money for domain servers.