Creating A Port Object In Logic Audio Environment Options

[mellotron]

i have been reading a book on how to use logic audio. there is a section in the book describing a specific way to set up midi devices in the environment. it says to create a multi instrument and then create a port object and cable them together... the only problem is, i cant find where you create a port object. i pulled down the "new" menu expecting to find "port object" but it is not there. how do you create a port object?

i am using logic audio platinum version 5.5 for osx if that helps.