Option to add box for Book It & Send

Could we have a checkbox on the pre order form that alerts authors that the order will be picked up by Book It & Send (or another provider).
Author can select when setting up the pre order form to allow this checkbox on their form or not, and they can select which provider will be at the event. So the reader just needs to either tick it or leave it blank. It will then show for the author that this will be picked up by another person?