Put the two "Optimuscan.zip.001" and "Optimuscan.zip.002" in the same folder then unzip Optimuscan.zip.001. The output folder should be 7,57 GB.
Find the Contact Sheet at ../Optimuscan/Contact_Sheet.jpg
Find some references photo at ../Optimuscan/_REFERENCES
Install the Blender (2.80) addon
Find the blender addon under the _PLUGINS folder.
Install the addon from the user preferences panel.
Install the Octane Standalone 4 script
Find the octane scrip under the _PLUGINS folder.
Copy the “.lua” file to your octane scripts directory.
Import model to blender
File > import > Optimuscan (.obj)
Import model to Octane Standalone
Script > Optimuscan_obj
Then you can easily import model, the script will setup the material according to your render engine.