Possible Clues:

• Stand-in sets record in responsibility
• One with the power to act for another
• Sheriff once on telly in dereliction of duty, gawped
• Assistant you had briefly set up to protect place
• Person standing in gym flips, overwhelmed by fatigue
• Disavow having place for new delegate
• Record in Nelson's signal his last word to second in command
• Record captured by tax assistant
• TD