In order to add a new user to the system, you should click on the Add button. The New user
dialog box displays (Figure 3.14). In this window you can select a specific user type (if you do this,
the system will assign to the user a first free identification number from the type selected). You can
also enter an Id. In order to do this you need to select a Select Id radio button. In such a case the
system will infer a user type from the value of Id entered by the user.