I have a small retail store. The problem that I have is that I sell items that is delivered in batches i.e. I order 1 box of cat food and receives 5 packages in the box which I sell separately. So if my stock level is down to 3 items and I create a Purchase order I need to order 1 items (box of 5). So when delivered I copy PO to Bill which automatically increase my stock levels. the problem is that it only increase the stock level by 1 instead of 5. I can't amend the qty before I copy to bill as that will increase the PO value incorrectly. 

I would appreciate any advise on how to deal with this. currently after I copied to bill I manually adjust quantity but it assigns it to stock shrinkage which is messing up my financial information.

Regards,

Danie