Rasagar/Library/PackageCache/com.unity.render-pipelines.high-definition/Documentation~/snippets/shader-properties/autodesk-interactive/use-roughness-map.md

UseRoughnessMap Toggles whether the material uses the RoughnessMap property or the Roughness property to set the roughness of its surface. Enable this checkbox to use the RoughnessMap property, disable this checkbox to use the Roughness property.