Thanks for your reply.
My apologies for not explaining myself correctly. I had meant that I would like to use the Cards Overlap function, as it’s shown in the WP Showposts demo:
I had purchased the Pro version so as to take advantage of this feature, unfortunately my designer isn’t able to achieve the horizontal rectangular format (http://1103665979.test.prositehosting.co.uk/BLOG/)
If there is any documentation available, or if you could indicate how this could be achieved, that would be very much appreciated.