How to manage local users in Windows 10

[Windows Central]

Add, remove, or change users from your Windows 10 laptop or computer.
Windows 10 will let you make multiple accounts on your computer, so your friends or family can all share the same PC. You won't have to worry about not being able to control the user accounts because as the system administrator of your Windows 10 computer or laptop, you add, change, and remove accounts as you please.
Just so you're aware, a local user is the terminology Microsoft uses to describe someone who doesn't already have a Microsoft account.

Full story from the WindowsCentral blog...