You should look into Chapter 4.1 of EZ-PD CCG3PA EVK Guide. When you set the jumper correctly and power the board, CCG3PA will show up below the NOTEBOOK which is CCG4. Then you can modify the configuration of CCG3PA.
That's because your PC is connected to CCG4 first then CCG4 negotiate with CCG3PA through CC.
Thanks. It wasn't clear that it was also the method of configuration since all the descriptions were geared toward "firmware" and "programming" and wasn't explicit about configuration too.