Subsystem Instance
This feature represents an instance of a subsystem defined by a Subsystem Definition feature.
Identifier
Enter a Component name for the subsystem instance. The prefix is X.
Node Connections
Select the Name of subsystem link from the list of defined subsystems in the model and set the Node names at which the subsystem instance connects to the main system or to another subsystem.
Location in User Interface
Context Menus
Ribbon
Physics tab with Lumped Thermal System selected: