Sean,
When you have a lot of insertions of the same image, there's a little box with a number to set for Copies.
It's above the Thumbnails, to the right side or the thumbnails, and it says, Copies to Add. You can type in a number or hold the mouse on the little up or down arrow to set the amount.
Hope this is what you were looking for.
Fred

Don't worry I have been using QI for over a year and I am still finding out things about the interface.