Calling Form Builder to Edit Form Objects 
In the Form Builder of the SAP system, you define the form objects required for form processing:
Formularschnittstelle (Bezeichnung im Form Builder: Schnittstelle)
Formularvorlage (Bezeichnung im Form Builder: Formular)
You can call the Form Builder directly as a transaction, or indirectly when creating or changing a form object in the Repository Browser of the ABAP Workbench.
Call transaction SFP in the SAP system.
On the start page of the Form Builder, you can enter the name of the form object and select the required function.
Call transaction SE80 in the SAP system.
Choose Repository Browser.
Call the Form Builder to create or change a form object as follows:
Um ein Formularobjekt für ein Paket anzulegen, wählen Sie das Paket aus und wählen Sie im Kontextmenü des Pakets
To create or change a form object with no reference to a package, choose Edit Object in the toolbar.
In the object selection list you can enter the name of a form object and select the required function.