Mission Planner Failsafe

Hello, nice to meet you for the first time.

I have a number of questions about the FailSafe settings in Mission Planner, so I’m leaving this inquiry.
At the very top of the screen, I see “Radio IN” and “Servo/Motor OUT,” and below them, there are gauge bar–type UI elements labeled “Radio 1” through “Radio 8.” I’m unsure what these displays specifically represent, and I also don’t quite understand why there are “Radio 1–8” gauge bars under “Servo/Motor OUT” as well. Is this a UI bug?

Additionally, is there any documentation that provides a detailed explanation of the values on the right side for Battery, Radio, and GCS?

Thank you, and I hope you have a wonderful day.

https://ardupilot.org/copter/docs/failsafe-landing-page.html#failsafe-landing-page

Deeply appreciate for your help! Thanks!