1. Go to settings
2. Account
3. Family & other users
4. Under other users… “Add someone else to this PC”
5. Select “I don’t have this person’s sign-in information”
6. At the bottom of the next box, select “Add a user without a Microsoft account”
7. Type in a new username and password(optional), and you should now have a new user account under “other users” (ใช้ชื่ออื่นแทน guest เช่น visitor) .

Ref: How I can add a guest account in windows 10