add items to order that has partial payment
we do a lot of custom orders that require a deposit. then have customers come and add more stuff to the order and we can not add anything else to the order once a payment has been processed. we have to make an additional order for the same customer. then bill them out on multiple invoices. i need to add items after a partial payment has been received to eliminate the customer having to swipe his CC multiple times for different orders on the same job.