Visibility of a Pane
Sometimes, the usability of your forms can be enhanced if you hide portions that do not apply to certain instances of the business process. If the relevance of a particular set of controls depends on a condition that is determined at runtime, you can place the dependent controls together in a pane and control the Visible property for that pane.
Binding can help configure the visibility of third party information pane based on third party involved parameter value. If there is no third party involved in the accident, the form should not show controls for reporting details about it.
You will also configure the Witness Information pane to be visible based on whether the Witness Available parameter value is true or false. If no witness is available, the form should not show controls that gather information about the witness.