The fifth sheet of the Form Wizard dialog enables you to specify if your form is to have read-only functionality or full update functionality.
By default, forms have read-only functionality over the instances of your selected class.
To select update functionality for your form
Click the Update option button.
Update functionality provides you with a form that has read, create, delete, and change capability for the instances of your selected class.
Click the Next > button to affect your selection and display the next sheet.