Being a noob to the Pi stuff myself I had a problem making a dual boot (Raspbian @ OpenElec) Pi.
I downloaded NOOBS from raspberrypi.org but after installation I only had the Raspbian O.S. to choose from.
To get the full list of all the other operating systems and install on a multiple boot menu, you MUST be hard plugged into a network with internet access.
I had no idea where I was going wrong and after about 4 downloads of NOOBS software and installations it clicked....... Doh!!