Use a Predefined Multiphysics () node to categorize the multiphysics interfaces in different physics areas. It collects the multiphysics interfaces into more intuitive and quick access groups. Right-click Predefined Multiphysics to add Contained Multiphysics Coupling and Contained Interface (Predefined Multiphysics) subnodes.
To add a Predefined Multiphysics node, under Definitions Library right-click Physics Areas and choose it from the context menu.See Physics Area for the settings.