Allow for tracking of on demand fulfillment in inventory
Please add a way to manage on demand fulfillment. I am an artist, and my customers order prints, which I then fulfill by going to my printer and having them made. Then I ship them once the printing is complete. I do not carry stock in these items, but I want to allow my customers to purchase them. The current inventory system does not allow you to set a 0 inventory without disabling the ability to purchase the item. An additional selection of "On Demand" would be useful to allow the item to be purchased, without having to select an inventory number.