Zoey offers a number of split order options to make fulfillment easier. Merchants can select an attribute that is attached to each of their items, and split orders up when the attribute values differ.
For example, if you receive items from three vendors, you can set up an attribute with each product tagged with the vendor that supplies it. When a customer buys products that are fulfilled by multiple vendors, the order gets split based on that attribute information. An order for each vendor is generated, which can then be passed along based on how you interact with them.
Zoey also supports the ability to split orders by each individual item, or separating items that can ship today from items that are backordered.
There are a variety of reasons to split up orders; this gives merchants control over setting the rules about when and how orders are split.