Local Admin rights via GPO

Hello Guys, 

I have some issue that our upper management wants to happen. they want to set a GPO for local Administrator on a single workstation. 

Example User1 will set as local admin on PC1 only and same thing with User2 will be set as local admin PC2 only. They want this to be set via GPO. 

Help guys . . 

Thank you in advance . . 

Happy new year . .

Regards, 

Trish

thanks