How do I change the email address to send POs to?

Login and choose 'Suppliers' on the top left, then choose Work With, enter the supplier name, and select.

Then click Contacts on the left hand side, and select the contact that should not be receiving POs. Click Edit and un-tick Email Supplier Order Notifications.

Finally, create the new Contact making sure that Email Supplier Order Notifications is ticked. If the email has no name, use Accounts and Payable as the first and last name.

If you wish to mark a contact historic, you can do so also.