Duties start date

• What is a duties start date?
• I am a new employer. What is my duties start date?
• As an employer, when will I need to put my staff into a pension scheme?
• Can I change my duties start date?
• What do I need to do on my duties start date?
• What do I need to do in preparation of my duties start date?
• As an employer, will I receive notification ahead of my duties start date?