You can change the admin user on a Windows 10 PC through the Control Panel. However, you'll need to be already logged into an admin account to do it.

If you use a Windows 11 device in a multi-user environment, for example, in a large family, or in a small office setup with multiple workers, there's always a risk to your privacy. Other users can ...

On occasion, you may want to allow other people in your home to access your Mac, but not your personal account. We'll show you how to set up and manage temporary guest users. If you are routinely ...

You can easily add or delete a guest account on your Mac through the System Preferences app on your computer.