Assume you're making these changes manually, and you want to a particular shape, and you know the shape ID, and the page it is on...
One way would be to open the Drawing Explorer window, expand the Foreground Pages tree, expand the Page tree of interest, expand Shapes tree. From there, you can select the shape you're looking for, and it will be selected in the drawing window.
The rest is up to you.
Wapperdude