raytracing foliage in 4.24

so I noticed in the preview 4 that there’s an option for static meshes to render shadows with world position offset in raytracing

I can’t seem to find an option to do that with foliage static mesh, or static meshes just dragged into the foliage painter

I can get the raytraced shadows to work with blueprints; actor foliage though, but I assume that’s more taxing on memory?