If you use the interface or the pure code, does not matter. The picture shows how to get it running, if you stick to it, is your own decission.
1: Create a material that provides the parameters you want to get applied from the imported material data (#40)](https://forums.unrealengine.com/unreal-engine/marketplace/1653161-runtimemeshimportexport-import-and-export-runtime-created-static-meshes-using-assimp-library?p=1725805#post1725805)
2: Place the material in “Material Info To Dynamic Material” node and feed it the material data to apply.
“Material Info To Dynamic Material” the node shown in the picture you have attached. You import and use the result of the import to run the code in the picture.
3: Set the resulting dynamic material to the mesh component.
As with every material, you need to set it to the component that holds the mesh. In this case the ProceduralMeshComponent/RuntimeMeshComponent.