I'll add to this:

The Blender node is your friend. You can modulate all sorts of stuff with it.

Quick example: I have a map that I want to multiply to a texture map for grunge.

(Poser thought it's a Specular Map and autonamed it. Silly bee, it's not.)

But the grunge got too dark for what I want...

There are many ways to fix this with nodes, but Blender node is my favorite because it's super easy. Consider:

Add your texture to "Blending", value 1. Whatever you put in Input 1 will replace what's white in what's attached to Blending, whatever you put in Input 2 will replace what's black. What's gray will mix. So I'm basically replacing my black with grey there.

Softer grunge :D 

And this is for many things. You can make funky colors.

And so on~~

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Feel free to call me Ohki!

Poser Pro 11, Poser 12 and Poser 13, Windows 10, Superfly junkie. My units are milimeters.

Persephone (the computer): AMD Ryzen 9 5900x, RTX 3070 GPU, 96gb ram.