User-Friendly Excel Optimization

I need a talented Excel specialist to take an existing workbook and make it far easier for everyday users to work with. The focus is pure spreadsheet optimisation, not heavy data analysis: I want smoother navigation, clearer input areas and any smart touches—whether via VBA macros, dynamic named ranges or advanced formulas—that reduce user friction.

Key points
• Goal: streamline the current file so routine tasks are intuitive and error-free
• Skills required: strong grasp of VBA macros plus advanced Excel functions (INDEX-MATCH, dynamic arrays, data validation, etc.)
• Outcome: a revised workbook that looks tidy, guides the user naturally and preserves all current calculations

When finished, please supply the updated file along with a brief note explaining any macros or logic you introduce so future tweaks are straightforward.