This session shows how to turn ChatGPT and Microsoft Copilot from shiny tools into repeatable time savers. We start with clear use cases for busy assistants and managers—drafting emails, summarising meetings, building agendas, extracting actions, and reshaping data—then map each task to a proven prompt pattern. You will learn a simple framework to brief AI well, add context safely, and iterate for stronger results in fewer tries. We will cover when to trust Copilot inside Outlook, Word, Teams, Excel and Power Automate, and when to switch to ChatGPT for richer ideation. Expect practical workflows you can deploy the same day, tips for avoiding hallucinations, and a quick way to measure ROI in minutes saved. Leave with a personal playbook that turns prompts into consistent daily payoffs.