Physics Material for both Footprint and Footsteps Issue

Well, this is simple yet difficult at the same time. How do I do both the footprints(material) and footsteps(audio) based on the same physics Material? There is only one slot for physics material. I am trying to only do the Landscape this way. Thanks

I was wondering how I can make footsteps when the player walks on different surfaces im guessing I should use a Tag like Woodfloor and when the player is in contact it would trigger the footsteps looping like a player is walking… But I was wondering I dont quite understand it well can someone maybe show me a example of it and I can add to it? or explain it?

I used this set of tutorials (at least 1&2) for adding footprints and footsteps audio.