How do you create a normal only Decal?

Hey guys

So I searched through previous questions posted here on how to achieve a normal only decal and the general answer was to use Dbufferer deferred Normals in the material settings + project settings.

However after I select deferred decal + Dbuffer translucent Normal, I go into the project settings > rendering and there is no option to enable Dbuffer decals.

In the viewport my Decal doesn’t show up or render at all. How do I set up a normal only decal?