Apple Enterprise App Store & DPS
Look, I'm not trying to get frustrated, but no matter how you ask the question, the answer is the same. There is no such thing as an enterprise "store." What there is, is the enterprise developer's program, which allows you create an distribution .ipa file, that you can host somewhere (behnind a username and password security portal) for users to download outside of the store.
Here is the Adobe help article explaining how it's done, but again, it can't be done with Single Edition. The license doesn't allow for it. The best you can do with Single Edition is distribute it to 100 iPads by side loading it after provisioning the iPads via the Apple Developer portal. http://helpx.adobe.com/digital-publishing-suite/help/creating-enterprise-signed-viewer-app .html
And sorry for getting frustrated, but I answered your question twice and I really do this every day as part of my career. Your question is one that comes up a lot as it would seem like private distribution would be simple, but because of the licensing restrictions, the enterprise license is the only license that will allow the creatation of an enterprise iOS developer signed application.