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Add custom instructions

Assign a very precise role to the AI to define its field of expertise and how it responds.

Prerequisites
You have opened a Google document and selected Extensions > GPT for Sheets and Docs > Launch.

  1. In the GPT for Docs sidebar, click Model settings.

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

    Choose Custom behavior in the dropdown to create your own behavior description
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When you select an option from the dropdown, you can modify the predefined instructions.

You can now submit a prompt in the current document with your custom instructions. Once a prompt is submitted, your custom instructions are saved along with all Model settings values, and is used for all prompts executed from Google documents.

What's next

Select other settings to customize how the language model operates.