How can I create an order multiple items, then invoice only the items from that order that actually ship as they ship. Example...

You order a Widget A, Widget B and Widget C. I build Widget A and ship it. I want to invoice it now. Then Widget B is ready to ship and invoice invoice and a week later, Widget C ships and needs an invoice. MYOB says it can't be done. Is that right?

When you create an invoice for the first item, write the quantities for the remaining items in the 'back-order' column. MYOB will create another sales order for the remaining items, and the printed invoice for the first item will show the back-ordered lines. You can do this each time you invoice out an item.

Before you do this you may wish to untick the sales preference titled "Retain original invoice number on back-orders", so that each new invoice has a different number.