Under the Print Tab of the Backstage view of his presentation, Kiaan can print 6 slides on each piece of paper by selecting the "Full Page Slides" which is under settings.
Once that is done, he will be presented with an array of choices.
He is to select whether to print 6 pages/sheet vertically or horizontally under the "Handouts" section.
There's another question I found like this which 2 people answered with either C2 or B3. (B3 was rated with 5 stars but I don't know if that was the user them-self)