Spreadsheet Formula and Column Update

I need assistance updating my spreadsheet, which is used for estimating manpower and fabrication. The project involves several key tasks to enhance the spreadsheet's functionality and accuracy.

Key Requirements:
- Add new formulas to improve data analysis.
- Add new columns to accommodate additional data.
- Fix existing formulas to ensure they work correctly.
- Update formulas with new ones from another spreadsheet.
- Consolidate multiple spreadsheets into one comprehensive document.

Ideal Skills and Experience:
- Proficiency in spreadsheet software and formula creation.
- Experience with data consolidation and spreadsheet management.
- Strong analytical skills to ensure accurate formula updates.
- Attention to detail to maintain data integrity across the document.