CheckboxGroup Component 
CheckboxGroups provide a way of grouping Checkboxes to give them radio button behavior. When a CheckboxGroup is selected
from the palette, it appears as an invisible bean. To apply a
CheckboxGroup to a Checkbox, do the following:
- Display the property sheet for the Checkbox (remember that you can select more than one Checkbox and apply any changes to all of them).
- Select the CheckboxGroup property.
- Select the "Variable name" option from the editor at the bottom of the property sheet.
- Type in the name of the CheckboxGroup you wish to apply to the Checkbox (remembering to press the Return key at the end).
Note: This will not alter the dynamic display, but the generated code will reflect this change.