How do I get apps to show up in the "passbook" folder?

I'm new to iPhone, and want to be able to use the "passbook" folder. I've installed several of the free "apps for passbook" on my phone, and figured all I had to do was to drag them to the "passbook" folder. When I did that, I wound up with the apps, plus the "passbook" app in a "lifestyle" folder. I obviously need a step by step tutorial.....the process is not as intuitive as I thought.

Thanks,

ElyArtist