Hello there, 

There are two main ways to disable the "Add to Cart" button in Odoo 17:

1. Temporarily Disable from the Website:

• Go to the product page you want to modify.
• Click on the "Customize" button.
• Under "HTML/CSS/JS Editor," find the line with t-if="product._is_add_to_cart_possible()".
• Change this to t-if="False".
• Click "Save."

This will temporarily disable the "Add to Cart" button on that specific product page.

2. Permanently Disable from the Backend:

• Go to Settings -> Technical Settings -> Views.
• Search for "Product".
• Open the relevant view (e.g., "Product Template").
• In the XML view editor, find the t-field="sale_ok" attribute on the product template.
• Set this attribute to False.
• Save the view.

This will permanently disable the "Add to Cart" button for all products that use that product template.

Additional Considerations:

• Out of Stock: If you want to indicate that a product is out of stock but still allow customers to see it, you can set the "Available Stock" to 0. This will automatically disable the "Add to Cart" button.
• Price-Based Disabling: You can use Odoo's pricelist system to control which customers can see the "Add to Cart" button. For example, you can create a pricelist with zero prices for certain customer groups.
• Custom Modules: If you need more complex control over the "Add to Cart" button, you can create a custom module to override the default behavior.

Remember to clear your browser cache and reload the page after making any changes!

Hope this helps ^^