'Split View' in OpenSpace allows you to view two captures side-by-side. You can do this by first logging into your OpenSpace Project and in the bottom right of your screen selecting the 'Split View' button.
From here you can navigate between different days, by clicking on the dates button on the bottom of the screen.
You can also select the 'Lock' in the middle of the screen, which will automatically lock both images as you look around to view the same direction.
Lastly you can share 'Split Views' with other members of OpenSpace by selecting the 'Share Link' button, which looks like a paperclip on the left side of the screen.