# Human review

Before enabling the Product Optimization Agent to work on multiple products, you can easily add a human review step to the process in two ways:

1. Conduct an initial test of product optimization.
2. Manually approve products before installation.

### Conduct a test of product optimization

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* **Create Your Campaign** – Set up your campaign with your desired settings and parameters.
* **Test on a Single Product** – Select one product to run the campaign on and generate an output.
* **Review the Results** – Examine the generated output to see how it aligns with your expectations.
* **Refine with Custom Instructions** – If needed, add custom instructions to adjust the output to better match your brand voice, formatting preferences, or specific requirements.
* **Make Final Adjustments** – Edit or tweak the output manually for any final refinements.
* **Check Credit Usage** – Verify how many credits were used for the product to assess overall campaign efficiency.

### Manually approve products before installation

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**Turning Off Instant Shopify Publishing:**

When creating a campaign, you can turn off instant Shopify publishing. All product changes will require approval before being installed in your store.

**To approve changes:**

1. Go to the **Worker Output** section and open the products.
2. Here, you can view the changes made, including a detailed analysis explaining why each change was recommended.
3. You’ll also be able to see the **before** and **after** versions of the product data.
4. Once you're satisfied with the changes, click **Publish to Shopify** to apply them.