Assign user as Administrator in Windows

If you are managing computers you probably have to create one user account with administrator rights for all the computers.

1,Create a new user (Administrator,Admin)
2,To add this account to Administrator group follow this tutorial
   Add a user to Administrator group
   Above link explains how to add domain user accounts to Administrator group.

3,To add local user to Admin rights,Click Locations

4,Login as current Administrator Username/password
5,Change location to local computer from entire directory
6,Enter Username and click "Check Names" button
7,Click Ok ,Login as a new user.