To define the users home path at creation, you'd use:
useradd -d /home/user user
To modify the user after creation, you'd want to use usermod from the CLI. The argument would be the same as it is for useradd, so you'd run:
usermod -d /home/user user
Where /home/user is the home path you want to assign to the user and user is the username of the user you want to create or modify.
Thanks for your reply. That worked!
If I may ask another question: Now I can't manipulate with files in new directory.
Should I change permissions or something now?
Also, how do I make the path to be root of the server, not user root? /home takes to user root only.