Blizzard has announced that Work Orders are now available for testing on the Dragonflight Beta and answered some questions about how to use it.
Blizzard
In this thread, please post your feedback on Crafting Orders, which is now available for testing in the Dragonflight Beta.
We have initially enabled this system on the Tyrhold realm only, and we expect to turn it on with some test vendors on the Valdrakken realm in a few days.