Creating double V belt

I am making a belt transmission with double SPZ belts. I managed to make one belt via the belt feature, but how do I duplicate this to create a second belt while still maintaining all the belt properties in Solidworks? So solidworks still sees this as a belt, with the paths and everything, and adjusts the lenght if I change the center distance of the pulley's or their size.

SolidworksAssemblies