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Add custom instructions

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

  1. In the GPT for Sheets sidebar, click Default settings.

  2. Select Custom behavior and enter your own custom 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 spreadsheet will be executed with your custom instructions. If you refresh existing GPT formulas, the output will take this new parameter into account.

What's next

Select other settings to customize how the language model operates.