I just installed PAF so have done some recent research.
To print a book in Register format download PAF Companion from the LDS website.It also prints fancier charts than PAF so the lit says but I haven't checked as I'm not really into charts - not with more than 10,000 individuals to enter into PAF.
You'll see instructions that the version is a trial one.A phone call and your credit card number for a $6+ charge and they will unlock it fully.It will even open some (all?) reports right into the WordProcessor software of your choice.
I like the PAF Register format better than FTL, FTM or MG.HOWEVER, it frustrates me that I cannot do any formatting in the NOTES in basic PAF.That's a little amateurish I think!