You can see the paths window by choosing Options>Program setup. If you want to restore the ODEON’s default material library (probably because you accidentally deleted a material) you can download the Material.Li8 file from here and paste/replace it at the Materials subfolder in the path highlighted above.
In the extensive material library in ODEON, every 1000 numbers are grouped together as a category, as seen below. In each category the first 100 materials should be reference materials. We have suggested a few to begin with. Hereafter there will be room for 9 different manufactures lists (e.g. with number 1100-1199). You decide which manufacturer (e.g. from below list of links) should have what numbers when inserting the material list in ODEON.
Click here to see how to manage and import materials in ODEON.