Quote - 1. The prop does not have separate Material Zones.  Everything is plugged into the "Preview" PoserSurface.

So? A rule node called "Rule preview" will match that. It will then copy whatever you tell it to copy into the preview zone. Or, "Rule *" would match any zone on the prop, including preview. Use that if you want to copy the same shader to all materials on the same prop.

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2.  The prop, which is a huge column-like structure has a texture map that adds a decorative design on the side of the column.  I'd want it to be marble, though.

Not sure of you're meaning. You do or do not want the texture map used? If you want it used, how? Is the texture map plugged into Diffuse_Color? Can you show me what you're talking about? We could include a Color Map in the shader, and hook it up in such a way that if it's there, it gets used somehow, and if it's not there, we do something else. I need to see how the color map fits into things, though. Like, if it's got actual colors, or it's just a mask, or what?

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3.  There are other props in the scene that do the same thing.  But I don't want them to be marble.

Well the way to tell the control prop that it applies to some props and not to others is via the rules in the "Apply Rules" material zones. Remember that these use the names of your props as filter data.

So if you have a bunch of Column_1, Column_2, Column_3 and you want VSS to apply to those, then make an Apply Rules rule called "Rule Column*". (without the quotes) If you also wanted Pedestal_1, Pedestal_2, etc., then you'd add another rule called "Rule Pedestal*".

If, however, you wanted Column_1 and Column_3 to apply, but not Column_2, you'd use a "Rule Column_1" and a "Rule Column_3".

Or, you could just rename Column_2 so that it isn't called Column any more.

Or, you could go around your props and name them VSSDoMe_1, VSSDoMe_2, etc. and use Rule VSSDoMe*.

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Renderosity forum reply notifications are wonky. If I read a follow-up in a thread, but I don't myself reply, then notifications no longer happen AT ALL on that thread. So if I seem to be ignoring a question, that's why. (Updated September 23, 2019)