How to add new materials in existing vray next library

[endless_affection]

Here there.
I’m using sketchUp 2018 and for redering using Vray next.
I want to add new materials in Vray next existing library for sketchUp 2018.
Thanks.

[mihai.s]

• Click on Folder icon (bottom left corner) > Adds a new file system location
  and choose/create a folder.

• Right-click on material you want to add to your new library > Save as