While password is not a required field, a user account is not usable without a password for the vast majority of the use-cases. The add user dialog box should allow the setting of the user's password.

Design considerations:

1. It should be optional.
2. It should allow the end user to opt to show clear text passwords.
3. These two decision should persist if the user chooses "add and add another" for adding a large number of users.
4. If the user does not show clear text passwords, they should have to type the password twice. Form validation should report if the two field values are different at each keystroke.