I figured this out this morning. You need to make sure that in iTunes - preferences - under the store menu that you have checked at least one of the automatic download boxes indicating that you want to automatically download movies, music, etc. Once you check the box, your computer will show up in the list of added devices in the manage account section of iTunes. To get your phone to show up in the list, you need to go into your iTunes settings on your phone and make sure you have turned on at least one item for automatic downloads (music, apps, books, etc.) Once I did this, both devices showed up in the list.
It took me a couple of hours to figure this out through a lot of trial and error so I thought I would share as none of the other postings helped.