I have 2 companies. Company A & Company B. I created 2 Letter head for each company Sales invoice. And on the company details section, set these as default letterhead. However when i create a new invoice for Company A or Company B, it shows only one letterhead until i manually edit this. This is a fix for now. But on a long run, there is a chance for manual errors. How do we accomplish the letterheads being automatically selected based on the company selected?