To make Sales Order follow the steps below:

1-Go to all sales orders (Accounts receivable/Common/Sales orders/All sales orders)

2-Select Button Sales order and fill the form and click OK.

3-Form Sales order has two state (Header View & Line View)

4-Header View: in Header View state you can fill the total features relate to SO. for instance Site and Warehouse,Delivery Address,Currency,Price include sales tax,Financial Dimensions , …

5-Line View: in Line View state you can fill the features relate to Sales Order Lines. for instance Unit Price of each SO Line,Discount,Tax, …

6-Finally Save SO (CTRL+S)