How do I change the port number?
To change the port number, do the following:
Double-click on the port to open the Port Properties dialog box. If you wish to change the excitation of multiple ports, select all the desired ports, then select Modify => Port Properties from the project editor main menu.
Enter the desired number in the Port Number text entry box. If multiple ports were selected, then all ports are set to this port number.
Click on the OK button to close the dialog box and apply the new port numbers. You circuit is redrawn to show the new port numbers.