How to create transparency for the Genesis body ?

Hi,

In the Surface panel which allows to modify the surface of Genesis body, there is a very long list of parameters.
Personally, I basically used the Base color parameter which allows to modify the skin.
I would like to give transparency to the body of Genesis, for give it a ghostly appearance. But I don't know how to do with all these parameters that I present below:

Base Mixing
Metallicity
Base Color
Diffuse Roughness
Diffuse Overlay Weight
Translucency Weight
Base Color Effect
Translucency Color
Invert Transmission Normal
SSS Reflectance Tint
Dual Lobe Specular Weight
Glossy Layered Weight
Share Blossy Input
Glossy Color
Glossy Color Effect
Glossy Reflectivity
Glossy Roughness
Glossy Anisotripy
Blackscattering Weight
Refraction Index
Refraction Weight
Glossy Anisotropy Rotations
Base Thin Film
Base Bump
Normal Map