Final answer:
An Assistant Safety Officer - Rescue Technician (ASO-RT) should be appointed in the absence of technician level training and certification by the ISO to assist with technical safety functions.
Step-by-step explanation:
When the ISO does not have technician level training and/or certification, an Assistant Safety Officer - Rescue Technician (ASO-RT) should be appointed to help with technical safety functions. An ASO-RT is a person who meets or exceeds rescue technician level competencies. They have the knowledge and skills to handle technical safety aspects in emergency situations such as fire incidents.