Multiple App delegates with storyboard

Multiple App delegates with storyboard

Hello there everyone,
I am new to IOS development and currently I am trying to understand app
delegates and how they work.
I know the fact once the project is created by default an app delegate.h/m
is generated.
However, I am using my current AppDelegate for setting core data, and I
need to work on Facebook integration as well in my storyboard, looking at
the code, I can not use one method to recall tasks, am I right? .
Do I use both the Facebook integration and core in the same AppDelegate file?
Or do I create new AppDelegate file and make the Facebook integration?
And if yes, how do I create new AppDelegate?
Any links for tutorials?
Because I do not know if I can use two different view controllers for the
same method:
- (BOOL)application:(UIApplication *)application
didFinishLaunchingWithOptions:(NSDictionary *)launchOptions
Note that I am using sotryboard no XIB