How to assign Admin Rights Only for their on Computers in Active Directory?

Dear Team,

Here i need 2 Helps from everyone

1>How we can assign the computer to particular owner for configuring admin rights?

Example : PC-1 should be assigned to John

2> How to configure admin rights only for their particular computer by using Active Directory Group Policy?

Example : PC-1 is used by John , so john should have admin rights on his PC, if john trying to login in to PC-2 he should not have admin rights on that PC

Waiting for the response 

Regards,

Aghil