Just to expand for general info:
CBC stands for central body controller, which is the BCM. When in car configuration change, you’ll notice everything sectioned into vehicle configurations1-8, ECU configurations 3-18, etc. CBC Features are mostly lighting features, with the LED lighting settings toggling on or off the PWM to the various exterior lights, and the behaviors of various lights.
CBC Config I/O section has to do directly with turning on or off the various pins on the BCM connector ports (inputs and outputs). There are 7 connectors on the BCM labeled A-G, and all the wires going into the connectors go to numbered pins. So, if you were to install the hood latch switch for remote start, the hood ajar sense wire goes to BCM connector C1/A- pin 11, and you would turn on pin A-11.
CBC Config I/O Usage section defines what exactly the use of certain BCM connector pins are that might have multiple functions. These BCMs are shared with multiple stellantis vehicles, so what a certain pin does on a Ram, might do something else on a Pacifica.