How can I add classifications to the Classification Lookup dialog box in General Discussion Posted January 8 In the 'Define Material' dialog box are four tabs for entering data. In the Construction tab I can select a classification standard. I can choose between OmniClass and Uniclass. Can I add a custom classification standard to the list? The Vectorworks help says Quote To add classifications to the Classification Lookup dialog box, see the instructions in the Libraries/Defaults/Classifications folder. But I can't find any instructions, my Libraries/Defaults/Classification folder is empty. Does anybody knows how this works?