In my previous post here:
I was careful to point out to do this in Editor, Expert tab. The automated collage which you have utilized has proven to be troublesome for several users, esp. with mix of portrait and landscape oriented files. Do it manually.
Do the math. Calculate how many pictures you can place on the paper stock Crop the pictures prior to placement. If you wish to use just an object on a picture, use one of the selection tools, e.g. lasso tool, selection brush, to select it and copy/paste to the canvas.
It is cruicial that you have the layers palette open, and click on the layer that you wish to work on.
It is also desirable to have the resolution of the pictures and the canvas the same value. I suggested 240px/in. The rule of thumb is 240-300px/in range.
We look forward to your progress. Feel free to repost.
"I eventually opened a new page in organiser, made the adjutsments as you indicated, Image,resize,canvas size being 8 x 11.5 inches.Dragged a photo in there but it filled the page, resized the photo to 4 x6. Then I was unable to move it into the correct location so I could fit another photo on the paper.A4 so when back into the canvas size again and ticked the top left corner of the 9 square box and it dropped in there but it's stuck there and cannot be moved around.Brought in a 2nd photo , tried to resize and that won't budge at all, in the middle of the A4 paper."
There are several ways to do what you want, and my solution is different from that from Hatstead.
To answer your above question, to be able to resize, move or rotate the file dragged from the photobin, be sure to have the 'move' tool selected in your tools vertical palette on the left (shortcut V).
This shows you the border of the dragged file (which by default is maximized in the canvas) and the 4 corner and 4 side handles of the box. You can resize, move etc. at will. If you can deal with one dragged image you can deal with many more. And you can resize and move at will any time later without losing quality.
This process has the big advantage that you don't need to bother about the resolution of the dragged files (ppi) relative to the canvas. With today's file sizes from your camera, nearly all dragged items are already bigger than the canvas, and when you drag them, they will be optimally downsized to fit their place in the canvas. If the original dragged file is smaller that the canvas at the same resolution, it will not appear as maximized when dragged. You can resize bigger, but you'll know you'll lose some quality.
As explained before, you can resize without any loss: the final resolution of the dragged file will always be calculated from that of the canvas and the full size of the original dragged file. That's the big advantage of smart layers. You can work on a smart layer a dozen time in your editing session: there will be no cumulative quality loss. If you save your project as a psd, those smart layers will embbed the original dragged files. Your 'project' is saved and you can continue your editing days later once again without quality loss.
The penalty for those layered pdfs with smart layers is the big final size.
So, generally, you end up with 'simplifying' the smart layers for two reasons: saving file size and allowing the full range of edits for layers.
Just try to the Move tool and ask if you need more details.