Final answer:
It is true that the effective time and date of a transfer should be communicated to all relevant personnel to ensure a smooth transition and prevent confusion.
Step-by-step explanation:
The statement is true. It is crucial that the effective time and date of the transfer are communicated to all personnel who need to be aware of such changes. This includes individuals both at the scene and elsewhere who may be affected by or need to respond to the transfer. Ensuring that everyone is informed allows for a smooth transition and prevents potential confusion or disruptions to operations.