Setting up a user account under my domain


I need to let someone edit a subdirectory and I am really confused how to get them their own password for just that one directory.
Can someone help me? I am sooooooooooooo confused.
Nothing I do seems to work and I am afraid I am going to end up blocking my own self out of the account.



It can be done, but the sub-directory in question will no longer be accessible from the existing user.

Study this wiki article: