Is there a Hotkey to apply a material to a certain side?

Hey Folks,

i crated walls in Maya and applied different Materias to each side of it. So i can apply different materials in UE4 to each of it, My problem is that by default i have 6 x “Basic Floor” for example. To find the right side i want the material on i have to “try and error drag and drop” onto the materials 0-5 Elements in den “Details” Tab on the right.

Is there a hotkey for that so i can look at a wall hit the hotkey and drag and drop on the correct side of a wall?

Thank you

There is Highlight tick box under every material slot. That should highlight the right parts of the object.