To create a new Fences desktop page, just need to click an icon or a Fences to left or the right most edge of your two monitors, if its located side by side horizontally. Once its over the edge, Fences will automatically create a new Fences Desktop page there and that icon or the fence you drag over will be locate into that new Fences Desktop page.
Fences desktop pages has nothing to do with Windows Desktop page. If you create new Windows Desktop page. The Fences pages will still be the same.
Having multiple desktops with different Fences on each would be optimal.
This is not possible currently in Fences.
Thank you,
Basj,
Stardock Community Assistant