No "Photo" or "Image" Option in Insert > Media group of controls ?

I'm trying to insert a still image into the info box of a marker but I'm stumped -- there does not seem to be a "Photo" or "Image" option in the Insert > Media group of controls. How can I insert a photo into the marker info box? What am I missing? Please see the screenshot of my menu bar. Many thanks in advance for your kind assistance.

P.S. I of course first tried Insert > Illustrations > Picture option but that inserts the image directly on to the base layer and not to inside the marker info box.

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