Shipping Calculations Question

To YITH or any existing users who would be gracious enough to answer this simple question (hopefully soon as I need to add quite quite a few bundles ASAP):

Does this plugin calculate the shipping based on the weights and dimensions of the individual products in the bundle or do we need to define the packed weight and dimensions for the bundle itself on the bundle’s Shipping tab?

I have searched but haven’t found a clear answer on this. Thank you very much for your kind assistance.