How to add image to a layer

File menu>place will allow you to add the entire image. However, if you wish to add only an object, do the following:

In Editor, go to the expert tab.

1. Open picture B, the one you wish to select something from to add to another picture.
2. Use one of the selection tools, e.g. selection brush, lasso tool, to select the object. You will see an outline ("marching ants") once the selection is complete
3. Go to Edit menu>copy to copy the selection to the clipboard
4. Open picture A, then go to Edit>paste
5. Use the move tool to position object from picture B.
6. In the layers palette you should see picture A as the background layer, and object B on a separate layer.

File >> Place

Then navigate to the second image in the folder.

The image gets dropped in the center and the cross disappears after positioning and re-sizing when the green check-mark is clicked.