Is it possible to have more than 1 collision box in pawn?

I have a Dragon character. Unfortunately the CapsuleComponent that comes with the CharacterPawn can’t be modified to fit even remotely to the model (e.g. I am not able to get the Head in). Adding additional boxes helps with collision towards physics-enabled meshes, but is useless for collision against static meshes (the head and tail pass right through any objects). I also have a PhysicsAsset which apparently isn’t useful for anything.

Is there any way to solve the issue in this engine?