How to record during CPR?

How does one properly record during CPR procedures to ensure accuracy and compliance with medical protocols? Is it necessary to have a designated person to document the procedure, or can the rescuer themselves take on this responsibility while performing CPR? What are the key elements that should be included in the record, such as the time CPR was initiated, the number of compressions and breaths administered, and any changes in the patient's condition? How often should updates be made to the record, and what are the potential consequences of failing to accurately document CPR procedures?