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Add custom instructions

Assign a specific role to the AI within the GPT functions in the workbook, defining its field of expertise and guiding how it responds.

  1. In the GPT for Excel sidebar, click Settings > Custom instructions.

  2. Select Write custom instructions and enter your own instructions, or choose a predefined option from the dropdown.


When you select an option from the dropdown, you can modify the predefined instructions.

All GPT functions within your workbook will be executed with your custom instructions. If you make new executions or regenerate existing GPT formulas, the output will take these new instructions into account.

What's next

Select other settings to customize how the language model operates.