These current Anduril 2 diagrams by @containerfan might help you to figure things out.
In the upper right corner of these diagrams, you will find ToyKeeper’s short link to the manual.
For the D2’s light-specific channel modes (6+), you may refer to the hwdef.h file for emisar-2ch.
By default (with newer firmware), the first 5 channel modes are enabled (you called them “A” to “E”).
E.g., with my D2 (sw45k & W1), 0135-2023-12-03, I only left the first two channel modes enabled.
In the above Advanced UI diagram, you might add the D2’s channel modes in the space on the left.
