The “order “module is an internal process where employees can follow-up and work on the order. It all depends on the kind of business.
If you are supplying goods then you will be able to register goods delivered to client or request goods to the purchasing department if you don’t have enough stock on the warehouse.
If you offer services you can assign “Resources” and estimate time and cost for these resources. You can as well mark a service as provided.
You can also have both, goods and services in an order. The order displays all the important information of the client, payment history, goods and services orders.