I think he want's full size pictures.
After loading says "success", before you finish, a small check box appears labeled something similar to "insert full size into text body". Check it and then hit finish. If you forget (or want smaller), you have a second chance at the bottom in each photo's box. It's in blue letters
You can also collapse the attachment box at the bottom with a check box. Never really figured out why ....but you can. See?
Maybe to protect a title/name ?