How to get Side-by-side layout in Beyond Compare 4's Picture Compare

Beyond Compare 4's Picture Compare has 2 images on top and the composite image below. This suits landscape images, but wastes plenty of space for highly portrait images on 16:9 monitors:

This video and screenshot show it operating in side-by-side layout: http://youtu.be/AKsbjFX4GN8

and the Picture Viewer plug-in for Beyond Compare 2 has "Side-by-side Layout" and "Over-under Layout" options: http://scootersoftware.com/download.php?zz=v2pixview

Is there a way to tu on Side-by-side layout in Beyond Compare 4's Picture Compare? Thanks!

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