Excel Date Calculation Fix

I need help fixing my Excel workbook. It should properly calculate time between dates, with the ability to add multiple lines. The total should also accurately reflect years, months, and days.

Requirements:
- Fix the date calculation issues
- Ensure the total calculation is correct

Ideal Skills:
- Proficient in Excel, particularly with DATEDIF
- Strong attention to detail
- Ability to troubleshoot and solve problems effectively