For anyone struggling with Mac's Microsoft Word: Go to Layout > Arrange > Selection Pane. There should be a list of all the images in that document. You can select it from there.
Would have appreciated the tip "use Select|Object on Home Tab" at the first of the video, then the long explanation about how the problem is created, instead of the other way around. Still, credit for addressing a MSOffice problem that should be easier to find -- especially for someone such as myself who has been using office products for many, many years. So, thanks.
THANK YOU been looking for the last 25 minutes for a video that would explain how to do exactly this. Everyone else just telling you how to put the shape "behind" big showtout to @computerbasics