Customized Pick Note Help

Good Day

This is my first time to develop in ERPNext and need some help or guidance. I am creating a Pick Note Doctype and manage so far as “all” there, but nothing working. I want to add Pick Note after Order and before Delivery Note. From Order you can create a new Pick Note and from Pick Note you can Create A Delivery Note. I want to “update” Pick Note details from Order Details.

Hope there someone who can guide me on how to “Update” especially Pick Note Table (Item Table) from Order.

Thank You
Albertus Geyser

It is hard to guess what you actually want to do, please brief your problem so someone can help you out.