Updated documentation?

I’m a newbie. I have a Mac, so the only software I can download is APM Planner (v2.0.17), not Mission Planner. Yet, most of the documentation I can find online seems to be for Mission Planner, so the screens are not right. For example, copter.ardupilot.com/wiki/ac_rollpitchtuning/. My screen does not look like this (don’t have those choices on the left), although I was able to find this page by going to Advanced Mode and clicking Extended Tuning. But the page says to set Ch6 Opt to “Rate Roll/Pitch kP” but that is not one of the options provided.

This is just an example. Am I looking in the wrong place for documentation that matches the software I’m using?