At first I saw unwanted captions with a jpeg.  I finally realized the property of the individual jpeg, under Details tab, had a Title data field.  And, it was being shown as a caption on my MM.  I was able to eliminate this unwanted caption by going to each jpeg's Properties/Detail tab/Title.  I erased the name in the Title field, and upon reload of the source file it went away.

Now I want to do the opposite.  I want to add a Title within the jpeg Properties/Details/Title field, so that it will show wherever I move the jpeg file in the source.  However, when I go to the jpeg files I want, and click properties/Details, and then add a title field, the field does not show as a caption.  Weird.

Any idea how to add a Title field in the jpeg Properties/Details tab/Title field?

Using MM 12 with Windows 8.1