Hello James,
I’m Florentino one of the Independent Advisor and I’d be happy to help you out with your question.
The Settings portion within the Print menu provides option to scale your document to your preferred size. Just want to confirm what version of Office do you have on the device? Are you using a Windows or a MAC device?
In the meantime, we'd recommend using the following settings when you attempt to print the document:
Under Settings, select Landscape Orientation.
Select A4 as the paper size.
On the option that allows you to modify the number of pages per sheet, select 2 Pages per Sheet.
Under the same menu, hover to the Scale to Paper Size option and select A5.
You may check this thread for more details:
https://answers.microsoft.com/en-us/msoffice/forum/all/print-2-a5-pages-on-one-a4/659cff74-e8df-4ce0-8f87-7dd827ddc176
I hope this information helps. If you have any questions, please let me know and I’ll be glad to assist you further.
Best regards,
Florentino
Independent Advisor