Hi Michelangelo and many thanks for the suggestions.
Maybe I didn't explain properly. I was looking for an equivalent to this Muse function when a rectangle is filled with an image and the parallax scroll only refers to the image in the rectangle but not to the rectangle itself.
In this screenshot the Initial and Final Motions are what Hype refers to as Enter and Exit Viewpoints.
To those not familiar with Muse - it's basically this effect.
So after some time looking around the forum, my lazy script kiddy persona found a solution!
Thanks to DBear's post I realised I could do this little trick - make a timeline run simultaneously with scroll and just work it out with white rectangles and an image - Parallax_mockup-TonyK47.zip (2.7 MB)