How to add AzureAD\User to Administrators group

[Andy]

You can do this via command line:

1. Login to the PC as the Azure AD user you want to be a local admin. This gets the GUID onto the PC.
2. Log out as that user and login as a local admin user.
3. Open a command prompt as Administrator and using the command line, add the user to the administrators group. As an example, if I had a user called John Doe, the command would be:

   net localgroup administrators AzureAD\JohnAppleseed /add

Log back in as the user and they will be a local admin now.