Yes, with a little setup. Either write in your custom instructions that your prompt library lives in that Excel file, or type / in the chat and bring the sheet in directly. Without one of these, the request is too vague and Copilot may not find the file.
- Simpler option: open the Excel file and use the side panel to retrieve or improve a prompt.
More in Microsoft Copilot
Why can I not see Work IQ in Copilot?
There are several possible reasons. Your organisation may have switched it off, you may be signed in with a personal account instead of your work one, or your Microsoft 365 Copilot licence may not be applied yet. Work IQ comes with the full licence, so check which licence your account shows.
What is the Copilot sidebar in Word, Excel and PowerPoint Online?
It is Copilot sitting beside your document in the online app. With a Microsoft 365 Copilot licence it has full access to the app and can work on the open document. With basic Copilot Chat you use it as a protected chat, but it cannot work inside the document.
How do I open Copilot in the Edge sidebar?
Open the Microsoft Edge browser and click the Copilot icon in the top right corner, just under the close button. The side panel opens and can read the page you are on. On private or work sites it asks for permission first, and you can say no.