My customer has a field that was designed for them called the 'exchange rate' so that they can keep track of the exact rate at which they sold the goods.
-> They want these fields to be mandatory when entering the direct order, the user must not be able to create the order without entering the exchange rate.
Also, the currency they sell in is always AUD (Aus dollar)
-> Can I set the line field to default AUD? I know that the customer you select determines the header currency, but how do I make it populate to the line field?