The reason the other CSC positions are not in the P3 manual is that they apply to the Phantom 2 but DO NOT apply to the Phantom 3.
It's very simple to test for yourself .. no props and see which positions turn your motors on/off.
On mine it is only the two positions shown in the manual.
Okay, my confusion was due to another post that said he tried it on the P3. I will try it myself. But thanks for the clarification.