It Just Works
Why Apple doesn;t have a print layout option that allows me to fold the two-up sheets into a booklet and staple on the edge, is a mystery. But they dont.
This app fills a need. You may not have realized you had this need, but when you do, youll want "Create Booklet" and youll thank the developers!
vlb-cfcl about
Create Booklet, v1.3.4