The 3 textures the models have:


By what on this post says https://www.vg-resource.com/thread-31640.html

(09-15-2017, 02:15 AM)Hallow Wrote: The _M01 texture is a masking texture that holds the Ambient Occlusion, Emission, and Metallic Maps. The Alpha channel is usually the Ambient Occlusion, Blue is usually the Emission, Green is usually Metallic/Reflective, and I'm not sure what the red channel holds. The Normal Map's (_N01) Alpha holds the Specular Map. Visual:

My problem so far it is how add Ambient Occlusion as texture and not as an scene texture as I search around.
All what google says about Ambien Occlusion are reference to the scene, more to separate models, in either standard or mental.ray form.
Beside the Metallic/Reflective texture

For begging with it, the texture are often compose of 4 separate textures: Base, Bump/Normal Map, Dirt and other of red/blue color. In hair, it is 5, being the extra one of green-blue colors.


Green one looks like this by each color channels:




Blue/Red ones looks like this the channels:





Base one of the head often comes with an Alpha channel:


And the extra and rare ones of the hair:




In general speaking, they're complicated, at least for me to figure out which each part of the channels goes on what part of the Material browser of 3D Max, except the Base & Normal_Map.