## Documentation Index

Access the complete documentation index at:
https://www.zoho.com/en-fr/books/help/llms.txt

Use this file to discover all available documentation pages before proceeding.

# Preferences

Let’s have a look at the various settings you can configure for the Projects module in Zoho Books.

## Field Customization

You can add multiple custom fields for the Projects module and assign different data types for each of them. Learn more about [Custom Fields](/en-fr/books/help/settings/customization/custom-fields.html).

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## Custom Buttons

You can create new buttons in the Projects module to perform specific actions for your transactions, or to open external links. You can create them using a deluge script and execute actions based on the functions you add. Learn more about [Custom Buttons.](https://www.zoho.com/books/help/settings/customization/custom-buttons.html)

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## Related Lists

You can view and fetch data from different modules using [lookup fields](https://www.zoho.com/books/help/settings/customization/lookup.html) or from the third-party service providers using deluge scripts in the related lists tab. Learn more about [Related Lists.](https://www.zoho.com/books/help/settings/customization/related-lists.html)

**Related**

*   [Overview - Projects](/)
*   [Basic Functions in Projects](/en-fr/books/help/projects/basic-functions.html)
*   [Functions in Projects](/en-fr/books/help/projects/functions.html)
*   [Manage Projects](/en-fr/books/help/projects/manage-projects.html)
*   [Other Actions in Projects](/en-fr/books/help/projects/other-actions.html)