Where is the "flip along short edge" option now?

My university recently upgraded their computers, and this includes their Acrobat programs.  While printing a PDF under the "multiple" heading, there used to be an option to "flip along short edge," so you could read left to right and staple along the short edge.  However, with the new upgrades, that button is no longer present.  Did it move?  Or is there some other way to complete the same action?  My only option now is to either staple my documents along the long edge, or have half of my pages be upside down.