From the menu, select "Add Lclass" to Model.

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

       The Lclass addition screen will be displayed.
      Enter the major classification name in the Lclass name.     
      

      There are two types of element names: fixed names and arbitrary names.
       (1) Setting specific names for major classifications.
      As long as the element names are different, you can create multiple major categories with the same name.
      

       (2) Set any name. Click the optional settings button.
      With optional settings, it is not possible to create multiple major classifications 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 L class name and element name.
     

       Click the Add button to add the Lclass.