To Change the Order in Which Your Images are Displayed

1. To display the Image Manager toolspace, on the ribbon, click Raster Tools tab Manage & View panel Manage.
2. Select the Image Insertions view.
3. Select the insertion you want to move, then right-click and select the type of move: Move Forward, Move Back, Bring to Front, Send to Back.

Note: You can also click and drag the insertion object up or down in the tree. The insertion at the top of the tree is at the top of the display order.