I have a Fuji Xerox Apeosport IV (Docucentre) printer with a stapler/booklet folder.  I had an A5 booklet that I was printing but the fold was the wrong way so that the inside of the booklet was on the outside.   Thankfully there is a little setting from the print dialog box under ‘Printer Features.’ If you change it from ‘single fold’ to ‘booklet fold’ it just reverses the direction of the fold.