SSMS: Creating a User

This function is based on How to Create New Login in SQL Server. Instead of using the SQL command: 
   -- Create a login at the server level
   CREATE LOGIN [YourLoginName] WITH PASSWORD = 'YourSecurePassword';
use SSMS to create a user:


⇓   Security ⇒ Logins ⇒ New Login...


⇓   User Mapping


⇓   OK