Quote - and How do I save it as a Mat.....  just anywhere in the materials section..

As in clicking on "add to library"...  plus sign...

Make a folder if you like first and then by clicking the plus sign. After clicking the plus sign, it will ask you if you want to make a Single material or a Material Collection. If you want to make a material collection, make sure you choose every material zone in that object that you want that shader on.

Laurie