It is a good idea to rename the objects in your form to organize it and identify the different areas of the form. To do this, the easiest way is to use the Hierarchy palette. The Hierarchy is a graphical representation of the contents of your form.
4.
Type the new name, PurchaseOrderForm.
5.
Rename (untitled Subform) (page 1) to PurchaseOrder.

Renaming the contents of your form