No battery calibration?

[AlexCrosby]

So I have noticed there's no specific aileron source on my radio and I'm not sure if it is a bug or otherwise.

On the radio setup page at the very bottom, I see Rud, Thr, Ele with the gimbal icons next to them, but for Aileron the icon is an arrow pointing up-left and just a "-" for the label.
This is the same everywhere in the radio, there is no Ail label for the source, just a "-".

Just wondering if this is a bug/intended/other.
Thanks

Using Radiomaster TX12 mk2

[AlexCrosby]

I had mistakenly renamed it in the hardware tab.