No. This is only if you want one animation to apply to one set of vertices and another animation to apply to the rest of the vertices. This is what you posted about in the other thread.
Irrlicht doesn't blend animations. If you want to apply the composite of two animations to the one mesh, the advice is to do it in an animation package (Blender, perhaps?) and use the composite animation in Irrlicht.
You could try rewriting CSkinnedMesh.cpp, but that is probably more long term. I'm interested myself in blended animations, but I'm still working on the loader.