printing multiple slides per page for pdf

Hey guys. I just downloaded 10.10.1 and I'm unable to print multiple slides per page for my pdf files. Usually before I print, I can choose an option if I want to have 4 or 6 slides per page printed (as this helps to save paper and is how I have my notes for school). But now, it says "copies per page" instead of "slides per page". So the print preview shows the same 1 slide printed 6 times on each paper, instead of 6 different slides on 1 paper (which what is what I was able to do before I downloaded Yosemite).

Does anyone know how to print multiple slides per page for pdf files???