You can plan a production order on the loom before actually sending it to the loom. When you plan a production order, it will be visible on the planning board so you know when it should be ready. It is possible to process a planned production order.
A planned production order can be decreated, so the content can be changed. At the moment this is not yet possible for a queued production order which is on the loom, this one can only be moved and reconfirmed but the content cannot be changed.
The next movie illustrates how you can create a planned production order, decreate it and change contents, and process and send from the planned order.