You can download the macro from myIntercad.myToolkit – App Store for SolidWorks related content.
Macro description is:
The macro converts the selected component to virtual component. The difference of this macro and ‘Make Virtual’ functionality that is only one instance of the component (selected) is turned to virtual while all other instances stay the same.
Macro can only work with part components.
The macro is only compatible with SolidWorks 2013 and newer.
Select and download the sample at this path Utilities/Assembly/Make Single Component Instance Virtual or just enter id=101 in filter and Hit Enter or ‘Filter’ button.
You can download the myIntercad for free at this link: http://intercad.com.au/myintercad/
Please let me know if you have any questions or issues.
Artem Taturevych, Application Engineer at Intercad (Australia)
translationXpert – add-in to translate SolidWorks models
myIntercad – an integrated tool for SolidWorks Professionals
Thanks for your reply, I only have SolidWorks 2012 - but maybe I can install SolidWorks 2013 on a machine to take a look at the macro.