How do I make books in a series stack?
I am publishing a series of student comic book collections and want them to the the same "series" so that they will stack in iBooks. I put in the same series (2016 Comics) for each volume but after publishing and downloading from the iBooks store, they appear separate. Any ideas?
I used iTunes Producer 3.1.1(593) on my MacBookAir running El Capitan 10.11.3
MacBook Air, OS X El Capitan (10.11.3)