How to place Apps on "Home Bar" for Logitech Revue Google-TV?
Press the Menu key on the remote, and then select "Edit home screen icons" or something to that extent (wording could be different, I'm going by my Sony Google TV unit.)  Now highlight (using the arrow keys) and click on the empty box on the home bar vacated by the app you've just removed, and a pop-up should appear with all installed apps and bookmarks listed.  Selecting any of them will place it on the home bar.