How can an image be modifyed on Behind text style?

[curiosa]

I am using Microsoft word. I created my document adding some images, in some
images I selected the “Behind text style". I modified my document and when I
tried to move or change the images on that style, I was not able to select
them. So I would like to know how to do that.

 

[Jezebel]

Select the arrow tool from the drawing toolbar, then drag a selection
rectangle that encompasses all of the graphic.