Tested on: Microsoft 365 Copilot with Excel for Microsoft 365 in a work or school account. Copilot buttons, table behavior, and available actions can vary by license, tenant policy, app version, and rollout ring.
Good Excel Copilot prompts do more than ask for a formula. They describe the workbook area, the business question, the output you want, and the checks you need before accepting the result. That mat