Yardbook has a ‘Clone’ feature which allows you to copy an existing chemical application. First navigate to the Chemical Application Page (‘Chemicals’ button on the left side navigation bar), locate the application you wish to clone, and then click on the green ‘Clone’ button. You can do this from the List View or when you click into the Details page for that particular application. The system will give you a chance to update the cloned record as/if necessary before saving.