The New User Wizard allows you to quickly add a user to a domain. Later, you can modify all user's settings.
Double-click the New User Wizard to start the dialog:

Select the Domain that you wish to add the user to and press Next.

Fill in the Username and Full name (real name) fields and press Next.

Enter the user's password (in both fields) and press Next.

Select the Permissions from the drop-down list.

Select the Account type from the drop-down list and press Next.

Check the entered information and press Next if it is correct.

Check the screen for error messages.
If the screen is shown as above, then the user has been successfully added, press Finish to exit the wizard.