About SubForm components
     A SubForm component is a container component that enables forms to
      display inside a parent form.
  
    A parent form can have any number of SubForm containers to load multiple forms. A single container can be used to load or display different forms one at a time, using the Run Form or Run Form as Linked Child event type.
By using these specific attributes, you can control how a SubForm component displays:
| Property | Description | 
|---|---|
| Default SubForm Spec | Use this property to specify a form to be loaded by default. | 
| Title Bar | Use this property to hide or display a form header above the contained sub-form. | 
| Disable Scrollbars | Use this property to hide or display the scroll bars if the
              contained form is larger than the SubForm component. When you disable scroll bars on a touch device, the parent form can be scrolled by dragging on the SubForm. | 
Modify the SubForm component attributes in the section of the Component property sheet.