Require the ability to modify an existing order. Currently the only option is to cancel an entire order. This is not an ideal customer experience.
IF order status is UNPAID, allow the baker to add or remove items.
IF order status is PAID, allow the baker to remove items and this partially refunds the order to the original payment method. Justification: there is an issue with the baker being able to fulfil the entire order so the baker needs to be able to remove item(s) from the order.