Excel Array Formulas for Project Management

I’m refining our internal project-tracking workbook and have reached the point where regular functions just aren’t cutting it. I need a true Excel power-user who can weave complex array formulas into the sheet so that task status, resource allocation, and timeline indicators all update automatically whenever the raw data changes.

The focus is exclusively on advanced formulas—no VBA or Power Query this time—so you should be comfortable with legacy CSE arrays as well as the newer dynamic array syntax (FILTER, SEQUENCE, UNIQUE, LET, etc.). If you can show me cleaner, more efficient alternatives to nested INDEX/MATCH combinations, that’s even better.

Deliverables:
• An updated workbook with fully working array formulas integrated into the existing project-management layout
• A brief, clearly commented note or separate tab explaining each formula’s logic so I can maintain it after hand-off

I’ll provide the current file and a short list of pain points as soon as we start. Looking forward to seeing how you can make the data sing.