One can do it manually.
1. Open the Editor, Advanced tab.
2. Go to File>new> blank file, and set the dimensions according to your paper stock. For resolution, it is desirable to have it in the 240-300 px/in range. Ideally the picture files should be in this range as well. If they are not, you can batch process multiple files via File>Process multiple files in order to adjust the resolution.
3. Do the math, and crop your pictures so that they will fit on the canvas (from step #2)
4. Go to File>place and point to your pictures, and place. Each one will come in on a separate layer, and you arrange them to suit and make minor size adjustments with the corner handles.
5. It sounds more complicated that it is, but you have 100% control of the process.
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