I am an importer and I always buy cases of product, usually 6 bottles in a case. I set up the Individual Items in Zoho and also Composite Items as made up of 6 individual bottles. I created my Purchase Order for the cases, example 100 cases of 6 bottles per case, and received them. When I resale it, I sometimes sell individual bottles, but inventory only show the composite items and does not track individual bottles, which I should have 600. How do I track these transactions correctly or how do I set up my inventory?