Herelink channel mapping

Where should I set that button a is ch 9, button B is ch 10, etc ? @MadRC @philip @Alvin Please help me.

What is sbus setting and mavlink setting ?
I am a solex user.
Are they both same ?

What is difference between mavlink and sbus and why we should not use sbus for mode selection ?

For latch servo setting in solex, Upto how many channel can I set. Is it up to 14 channel ?

For example, set SERVO11_FUNCTION to 58(RCIN8) will make it output the input from RCIN8
https://ardupilot.org/copter/docs/parameters.html#servo11-function-servo-output-function

You can only use mavlink to change a parameter from controller
https://ardupilot.org/dev/docs/mavlink-get-set-params.html#setting-a-parameter
https://docs.cubepilot.org/user-guides/herelink/herelink-user-guides/mavlink_buttons

What is servo 11 ? I mean on what pin is it on my pixhawk cube orange ? I @Alvin hat is servo 11 ? I mean on what pin is it on my pixhawk cube orange ? @Alvin

Read the ardupilot wiki. Servo1-8 = MAIN OUT 1-8, Servo9-14 = AUX OUT 1-6
https://ardupilot.org/copter/docs/common-rcoutput-mapping.html

Then what about servo 15 and servo 16 ?

They are for autopilots with 15th and 16th PWM output. Ardupilot isn’t for Cube only.