What do I need to add to my P2 to use the Ground Station way points feature?

You need to buy the bluetooth kit.

Click here to check it out

I am trying to find out if Ground Station will ever work with the FC40..my guess is no.  But it seems a bit hokey that Ground Station  is available on the  more expensive Phantoms.  I had a CX20 that used Mission Planner...thought I would upgrade? to the Phantom (due to a crash) and all my research has told me no waypoint features with this $500.00 unit but some of the cheaper models use free Mission Planner.