I have an existing workbook that needs a tidy-up and a few smart upgrades. Here’s what I’m aiming for: • Formulas: Some of the current calculations are misfiring, so I need them fixed. I also want several new formulas introduced and the overall set optimised for speed and reliability. • Timeline sheet: Please add an interactive timeline that pulls dates from the data tables and displays key milestones clearly. A dynamic Gantt-style view, slicers, or any intuitive approach you recommend is welcome—as long as it updates automatically when new rows are added. • Additional data fields: A few new columns must be incorporated into the main sheet. These will feed both the timeline and summary metrics, so they need to slot in without breaking existing links. • Conditional formatting: Apply clean, professional rules that highlight overdue items, approaching deadlines, and any data inconsistencies. Consistency with our colour palette is important. The file is already structured, but I’m looking for someone who can streamline everything, keep formulas transparent, and document any changes in simple comments or a short “Read Me” tab. If you’re comfortable with advanced Excel functions such as INDEX-MATCH, dynamic arrays, and Named Ranges, as well as presentation touches like sparklines or data bars, this will be a straightforward assignment. Deliverables: 1. Updated workbook with working formulas, timeline, new fields, and polished formatting. 2. A brief change log explaining what was modified or added. I’m available to clarify data relationships or supply sample entries as soon as you come on board. Let me know your estimated turnaround time and any questions you might have.