Megascans missing slot for Displacement Map

Pulling my hair out trying to get material blending to work.
Following Matt Workman’s excellent tutorial but where he describes adding Displacement maps I cannot find any Displacement map slot in my Material Instance.

Am using

as my parent.

This thread suggest I should be using MS_DefaultMaterial_Displacement as my parent but cannot find this material in the Megascans presets.

Hi, did you ever find a way of getting Displacement to show up in your Master Material, I’ve having a nightmare trying to enable it?