Add RF tab?

Hi, I am finally getting around to integrating my Vista 21iP panel with my Hometroller S6, and its looking good. I'm running version 3.0.0.27 of the plugin.

I have a couple of questions and minor issues, so I'll start with a simple one. What is the Add RF tab function? All my sensors are wireless and are working fine without filling this in. Not sure how the plugin could use the info anyway...

Thanks