First post ... sorry if it's "obvious".
I create a new 3-fold A4 landscape document with 2 pages and the pages are displayed next to one another. But if I
load a tri-fold brochure template, they are vertical ... which seems nicer. How do I get the pages laid out
in a single column?
Many thanks,
The answer needs a bit of explanation.
In Scribus, documents are always created "page by page", but for many layouts you would like to see a "preview" of what the final product will look.
That's what you choose when you chose between single, facing, tri-fold etc for a document: How shall Scribus place the pages on screen when you are working with the document.
Unfortunately Scribus only has a limited set of ways to display a document, but I know there have been requests for a feature allowing the user to place pages in an arbitrary pattern on screen (possibly using drag and drop).
In your case I think you can get what you want by choosing Single page layout.