This has been migrated to wishlist board:
i) Including shipping instructions on invoices. This is currently included in the order confirmation, which both customer and hub manager receive via Email, but is not included in neither of the currently available templates for invoices
ii) Customizing the information included on invoices. The topic of customizable invoices was also raised on the discussion (see link above). Currently, there are two distinct and pre-defined templates available for the whole community