Choose Tools→Assistants→Assign Terminals
On the Assign Terminals Dialog Box, type a name in the Component Name field.
Click the New button.
Type a terminal name in the Name field.
Click the row containing the terminal
Click the Set button.
In the graphic window, click a circular edge to assign the terminal to.
Click the OK button.
Tip:
A file can contain only one component.
A component can contain multiple terminals and you can assign multiple terminals to a single circular edge.
You can use the Clear All button to remove the component name and all terminal information from the Assign Terminals dialog box.