About SubForm components
     SubForm components are container components that allow you to display
      other forms 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 is displayed:
| Property | Description | 
|---|---|
| Default SubForm Spec | This property specifies any form to be loaded by default. | 
| Title Bar | This property hides or displays the form header. | 
| Disable Scrollbars | This property hides or displays the scroll bars if the 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.