Landscape pages with binding on short edge
I'm making a simple sign for a shop with open on one side and closed on the other. The document is A4 landscape and the sign should have a single hole at the top so it can be flipped from open to closed.
The default landscape layout prints as if the margin was on a long edge, e.g. if page 1 is held in portrait orientation and turned as if bound on the left edge, page 2 appears with the same orientation.
However, if page 1 is made landscape and turned using a short edge, page 2 is upside down. This means the the back of the sign appears upside down and it must have two hanging points rather than one.
How do I setup the document so that when printed and held as landscape, the back has the same "up" as the front?