Browser mode-two folder side-by-side, possible ?

[mrwul]

XnViewMP browser
Left- folder tree
Right panel - subfolders

I'd like to compare those folders, but I want to view the files as thumbnail, so I know what they represent and what to delete.

So in fact I would then get three panels:
Tree - subfolder1 - subfolder 2

Is that possible?

Thanks!

[user0]

not possible, use 2 app instances

[mrwul]

Okay, many thanks. Who knows, may be one day . . .