This CAN be accomplished . . . however I believe it is going to take some code customization to achieve – including, I believe, creating a new divs for the module position(s) within the appropriate block files – as well as relative CSS for the “duplicated” positions – so that you can achieve the varying height and width proportions you want. (This can be as simple as copying/pasting the existing CSS for the original slideshow parameters – renaming them to the new div you created – and then modifying/customizing them for that/those divs accordingly)
Of course, your image sizes will need to be appropriately sized as well.
You CAN utilize multiple instances of the same JA Slideshow module – so you won’t need to modify any PHP or Javascript code in that respect. I would simply recommend naming your duplicated modules a bit different than each other – so you can tell them apart within your Module Manager list.
YES, this whole process WILL take a bit of time/patience to work through and get to where you want it . . . but believe me (from my own personal experience), the learning experience as part of the process is invaluable. 🙂
GOOD LUCK WITH THIS . . . and PLEASE follow-up with us when you accomplish this goal – as I am certain many of us would be very interested (and inspired) to see the result.
TOM
P.S. (I am going to field this by a couple of my astute Support Team colleagues as well – just to make sure I’ve steered/advised you correctly). 😎