The Business Application diagram will contains a program and a form.
Select File > New > Genero BAM Desktop (for desktop applications) or File > New > Genero BAM Mobile (for mobile apps). Under the section Application Modeling,
select Business Application Diagram (4ba) and click OK.
A blank diagram (.4ba) opens.
Right-click on the blank diagram and select New > Program.
Right-click on the blank diagram and select New > CRUD Form.
Right-click the Program entity, and select Add Relation To. Click and
drag from the Program to the Form entity to create a relation from program to form.
Save and name the BA Diagram (4ba) to your file structure and to the
Application node in the project.