[Q] USB/BT Joystick Center Seperate Mapping Possible? topic

So I managed to map one of my USB NES Controller using the USB/BT Joystick Center app on my OUYA. It works perfectly, but if I mapped a second controller (to play with my brother) , my OUYA and NES emulator recognizes it as one. Is there a way where I can make these two USB NES Controllers seperate rather than into one using this app or do I need to find another one?