Thanks for the reply Bruno.
The good news is that my plugin already extends the editor but that video looks very helpful, I’ll certainly give it a watch when I get the time.
So there really isn’t any way to add a collision channel without having to write my own parser and messing with ini files? As a dedicated physics programmer I’m really feeling the lack of love for physics from the Unreal coders in pretty much everything I’ve encountered so far. Its a shame really because if I were a graphics programmer or an artist I’m sure I’d find UE4 amazing, but from a physics perspective its really very disappointing.