Final answer:
The Coordinator of Fire Safety must access the fire alarm control panel and follow safety protocols to silence activated audible and visual devices after ensuring no actual emergency exists.
Step-by-step explanation:
Actions taken by the Coordinator of Fire Safety and Alarm Systems to silence the shelter's audible and visual devices once they are activated may involve accessing the fire alarm control panel (FACP) and performing a series of tasks. In a standard procedure, the coordinator would need to enter a code or use a key to access the panel, then navigate to the silence or reset option to deactivate the alarms. It is crucial that this action is carried out in accordance with safety protocols and after ensuring that the site is secure and no actual fire or emergency persists.