That article looks like it offers the answer.
Between the time of my post and the time of your reply I discovered the answer was actually my confusion between the meaning of a linking to iTunes and linking to a Shared iTunes.
In order to accomplish my goal I had to Disconnect the linked iTunes account and relink to the iTunes account on my Mountain Lion computer. After that everything fell into place and the options were available as I thought they should have been in the first place.
I hope my discovery and your reply will help another who may yet stumble on the same issue.