Create a Local Windows 10 Account
To create a local Windows 10 account, log in to an account with administrative privileges.
Open the Start menu, click the user icon, and then select Change account settings.
On the Settings dialog box, click Family & other users in the left pane.
Then, click Add someone else to this PC under Other users on the right.
Do not enter an email or phone number on the “How will this person sign in” screen. Instead, click the “I don’t have this person’s sign-in information” link.
On the Microsoft account dialog box, click the Add a user without a Microsoft account link at the bottom.
Enter the name of the user under Who’s going to use this PC and type the password twice under Make it secure.
Select three security questions and enter answers for them under In case you forget your password.
Then, click Next. Microsoft creates a new local account.