If you are making multiple copies of elements on the same form, the Customize window for the form you want to customize should be open.
If you are copying elements from one form to another, you must start by displaying the form from which you are copying in the Customize window. [To customize a form (Setup menu) or To customize a form before printing]
Note: You can't add data fields to forms where they don't belong
If you're copying elements from one form to another, click OK to close the Customize window for the form from which you're copying; then open the Customize window for the form to which you're adding the element. (Opening a form in the Customize window)
To undo the last change you made, click the Undo button in the toolbar.
Click OK to return to the Customize window.