Delete Primary MS account

[demby]

Hi
I have an MS account for my pc and set up another for my wife's laptop with separate email address, login etc. (the devices are linked) I now want both the pc and laptop to have the same account with administrator rights ( there will be no need for secondary users)) using same log in details for both machines. I have googled how to delete/close the laptop account but dont know how to access/install my primary on the laptop. Basically, whereas the laptop used to have my wife as administrative user, I now want it to be me as she has no further need for the laptop.
Advice/guidance most welcome
Thank you

 

[Xploit Machine]

goto Accounts -> Email Accounts and signin using your ID and make itas Administrator, logout and relogin using your account the remove the unwanted account