Help me for Document and Process

Dear All
Now I'mworking on Sales Order Managemen with JDE Enterpriseone - 9.1
on my company for sales Order is

1. Quotation
2. Sales Order (SO)

if qty of goods are met
    3.  it will create "Order to Ship letter" letter with ref. Number of SO
        this as the basis for the warehouse to collect goods
else
    4.  it will create "Order to Production for item letter".
         This is a letter to request to production to make goods

5. "Shiping Letter" for sent the item to customer with ref. Number of "Order to Ship letter"
    
6. Invoice with ref. "Shipping Letter"

I can make Quotation and Sales Order in sales Order (P4210) in diffrent Type of Document and I can make Invoice