How to get SceneTexture:PostProcessingInput0 node for material???

Hi guys, following this documentation, but unsure of how to get the function “SceneTexture:PostProcessingInput0” as shown in the image.
Does anyone know how to achieve this??

Thanks!

search for the node “SceneTexture” you can select several Buffers and the Post Process Inputs there.

This doesn’t seem to be the case for 4.24. I can’t access this node anywhere. Has this changed to something else? Or is there a setting somewhere in order to expose it? This error occurs when using any of the other SceneTexture inputs:

Errorf(TEXT("SceneColor lookups are only available when MaterialDomain = Surface. PostProcessMaterials should use the SceneTexture PostProcessInput0."));