Material Link
Add a Material Link node () under a Materials node in a model component to add a link to a material that you have added under the global Materials node () and use it as a material in that component’s geometry. The Material Link node’s Settings window is similar to the Settings window for a material node (see The Settings Window for Material), with the exception that there is no Material Properties section. Instead, it includes the following section:
Link Settings
From the Material list, select the global material that you want to link to:
Any Switch node, if you want to run a material sweep.
None, to not link to any global material.