It isn't possible, you cannot fold portrait paper on this device or any other by Xerox.
I have a 28 pg pdf that I imposed into a 14 page file. I need to print this job into a 14 pg, portrait, double sided booklet. The finish size should be 4.25 x 11 folded and stapled. I have tried to send this through the printer and it comes out folded horizontal. 8.5 x 5.5. Is there any way to do this into a 4.25 x 11 booklet? Any help would be appreciated, very frustrated I've tried everything. Thank you in advance.
I use mac os 10.8, Xerox WorkCentre 7835