Our 3D CAD supplier models have been moved to 3Dfindit.com, the new visual search engine for 3D CAD, CAE & BIM models.
You can log in there with your existing account of this site.
The content remains free of charge.
The same window can be reached in PARTdataManager via Extras -> Settings.
A detailed description of the window can be found under Section 12.1.8, “ "3D settings" tabbed page ”.