The Option button group element has a label. The label can be deleted on the Display tab or by clearing the Has label check box.
The available values whether the option buttons are ticked or not, can be passed at design time or dynamically during the process runtime by a dataflow or a report. Only one option button in such a group can be checked at any one time.
Further option buttons can be added on the List entries tab. You can assign a name and a value to the individual option buttons in this list.
Example code for the report support
Context.setProperty("availableValues","Yes,No,Maybe");
Context.setProperty("value","No");