Which settings do I need to set to use Leap Motion in UE4?

I want to use Leap Motion in my project but I don’t know where to find it in the game.
I downloaded and build UE4 with the official plugin and enabled it in my project.
But now I don’t know what to do next to use it.
I didn’t find any guides on how to set the settings and what to do after enabling the plugin.
I don’t find the Leap Motion device under Player Controller Class in the world settings.
Do I need to create another GameMode?
Or do I need a special character other than the DefaultCharacter in Default Pawn Class?

I solved the problem.
If someone wants to know just ask.

Hi, i’m really new in all oft his. Do you know how to make an object rorate and follow my hand with the leap? I mean like this: 3D object Rotation in WPF using Leap Motion - YouTube