I have a GPO that I need to apply to the user DOMAIN\DumbGuy, but only when he logs on to DOMAIN\DumbGuysComputer$. When DOMAIN\NiceReceptionist logs on to DOMAIN\DumbGuysComputer$ it should not apply. When DOMAIN\DumbGuy logs on to DOMAIN\ReceptionstsComputer$ it should not apply.
It needs to only only apply to one person on one computer.
If I apply the GPO to the User object, it will apply to all his computers. If I apply the GPO to the Computer object, it will apply to all users on that computer. If I apply it to both, it spreads even wider.
How can I apply a GPO to just one user on just one computer?