- Select the Start button, select Settings > Accounts and then select Family & other users. (In some editions of Windows you’ll see Other users.)
- Select Add someone else to this PC.
- Select I don’t have this person’s sign-in information, and on the next page, select Add a user without a Microsoft account.
- Enter a user name, password, password hint or choose security questions, and then select Next.
You can also view a video on Microsft help centre here https://support.microsoft.com/en-gb/help/4026923/windows-10-create-a-local-user-or-administrator-account