To create an S class, select the L class or S class that belongs to it.
        Once selected, select Add Sclass from the Model menu.
　 

        Alternatively, in the model list, right-click and select Add Sclass. 
      

       The Sclass addition screen will be displayed.
       Set the subclass name to the Sclass name.     
     

       There are two types of element names: fixed names and arbitrary names.
       (1) Set specific names for minor classifications.
　  You can create multiple subcategories with the same name as long as the element names are different.
     

       (2) Set any name. Click the optional settings button.
      With optional settings, you cannot create multiple subcategories with the same name.
      Used to create (instances) in groups with function level 3 or higher.
　 Using the model as a template, set it concretely in the instance.。

       To return to the fixed name, click Cancel.
      Set the Sclass name and element name.

       Click the Add button to add S class.