Event properties of observability and controllability are specified on the Events tab of the Status Panel. If an event is observable (respectively, controllable), a check mark will be present in the box next to the event name.
To denote that a particular event is observable (respectively, controllable) simply click the appropriate box in the table. Similarly, to indicate that an event is unobservable or uncontrollable, remove the check from the box by clicking on the appropriate box.
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