Thank you for the link. I was told to go to the TMG-L and inadvertently posted here instead. (Seldom post.) Will plan to post there in a few days if it is still needed.
Have learned how to easily change the location of Exhibit files. First physically move the files to the desired location. Second, in TMG, go to File - Maintenance - Validate File Integrity. Then Specify the Folders to Search (where the files are now residing). It worked beautifully!!