I use the standalone version from octane and I often use texture maps but instead of adding these maps by hand, I wrote this script on what I could find in this forum.
I think the base of the script is from the "animated texture" lua script found in this forum!
My problem is that the values from the script show up in every slot (Normal, Diffuse...).
The script is working just fine but it is room for improvement.
How it works:
I select the diffuse map from the texture set and the script load the rest by its name, _diffuse, _roughness, _specular, _normal ...
and also setup values for the specific map.