Thanks for the replies.
Try as I might, "Photo Info" allows exactly one typeface/font -- Ariel/Helvetica. Size is variable, but not the font. Also, no repositioning is possible with any amount of clicking or attempted dragging. On the other hand, I was able to create a new Overlay/Identity Plate with my digital signature, so at least that works well. I just wish I could reposition the caption, other than centered and Ariel. I've attached a screen capture of the way everything is set up. Any other thoughts on fonts? Seems strange that Adobe, a major font company (if not THE premier font company) would limit one to only one typeface.
Nemo