Setting up AUX ports on Pixhawk

I'm using a T8FG Radio and a R6208SB Receiver  and I want to setup AUX ports to operate Retractable Landing Gear, Gimble Pitch, and Lights on a Hexicopter , after setup up in T8FG I will send signal through S-Bus RC-IN to Pixhawk.

What i need to know , using Mission Planner howto setup on the Six AUX ports.

I'm aware of the ports are recognised  as;

1  50

2  51

3  52

4  53

5  54

6  55

I'm using a Receiver Switch to control the lights

The Retractable Gear and Gimble Pitch have their own servo connections