How to add another app (option 1, 2, 3 etc) from current app (main app)?

Is it possible to have multiple options of the app (separate FB app instances) and be able to add them from the main app? If yes where I can find some info how to do that?

I'm trying to install an app to the page multiple times, but what I know it 开发者_运维技巧is not possible so what I'm looking for is to create a main app with options as separate FB apps aka "Install Another Tab". I saw few apps which utilize that way.