Setting up ultimate facebook to be used network wide

I am running multisite with buddypress and am looking to set up the ultimate facebook plugin using only the main blog. So the main blog would create the facebook app to be used on all childsites. None of my child sites would have to create a facebook app or configure any settings. I was told this was possible, but am now lost on how to set it up. And how do I set it up so their posts get published to their facebook profiles?

Here's what I was told regarding using the plugin in this way: "it should be possible to use the plugin's network settings and configure the Facebook App there, to be used across network"