I am designing a booklet: the print house needs the two sides of the booklet to be on a single PDF page. When exporting the PDF from Scribus, I found a way to make it such that PDF viewers display the pages side by side (Viewer -> Display settings -> Document Layout -> Double Page Left), but the actual PDF still contains the pages 1:1.
In essence, I'd like to export the PDF such that the document which looks like this in Scribus:
contains two pages AB CD, instead of four pages A B C D