To edit the settings of an Ad-Hoc Element, use the appropriate check box in front of the element/form name, and then click Edit Element.
To deactivate a form/element, use the appropriate check box in front of the element name, then click, Deactivate. This will remove the form from the Ad-Hoc Elements list.
To activate the element again, select the appropriate form, and click the Activate button. The activation button toggles between Deactivate and Activate.
Click the Hide Inactive Elements button to hide or show Inactive Elements. This is also a toggle button.