If you've created a dispatch advice and invoice for a specific part of an order, it is possible to create those documents for the rest of the articles of that same order.
You would need to follow the same steps you did the first time.
In the order, click on Create dispatch advice, go through all the steps again and confirm that the delivered quantity is automatically set to the remaining quantity. Once you are done, you'd just need to send the dispatch advice, and the order will appear as fully delivered.
To create an invoice for the full remaining order, click on Full order. Again, fill in your information and send the invoice when you finish,
When an order has been fully accepted, delivered and invoiced, it automatically moves from the inbox to Completed.