Where to plug cavity and gloss maps from Marble texture in MTLX material in Solaris inside Houdini

Where to plug cavity and gloss maps from Marble texture in MTLX material in Solaris inside Houdini? I downloaded a marble texture and I see basecolor, cavity, gloss, normal, roughness, and specular maps. Where do I plug these in in MTLX material inside Solaris in Houdini?