Substance Setup Help for Unity

Hi everyone, I'm running Unity 2021.2.2f1 using HDRP and the latest Substance asset. I have a Substance with seperate diffuse, normal, metallic for my characters head and body. I labeled and identified each output accordingly (Head Diffuse, Head Normal, Body Diffuse, Body Normal, etc.). I create a sbsar file and import it into Unity.

When I expand the Substance it creates a material, and 2 exported textures: Skin - mask and Skin - normal.  How do I get it to create all the output textures? If I select the "S" and choose 'Gererate All Outputs', it does not label each output as I have identified above. How do I get the textures to export correctly with the appropiate naming?

Also my character has two materials; Head and Body. Should I create another "Substance Graph" by hitting the + button when selecting the red "S" in Unity for my two materials, or just create materials in Unity and manually assign the exported textures?

Thanks for your help.