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 ...

You can create a guest account on a Windows 10 computer by using the Command Prompt feature. Here's what you'll need to do.

I use my own individual Windows computers at home but also share a PC with my wife and my cat, Mr. Giggles (don't ask). To ease that process, I set up dedicated accounts for each person (and feline).