> For the complete documentation index, see [llms.txt](https://docs.simplio3d.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.simplio3d.com/learning-the-app/products/add-3d-models.md).

# Add 3D Models

The second step is to allow users to select one or more 3D models they want to use in their configurator. After selecting the 3d models, you can click the "Preview" button on the top right of the screen to see them in your configurator.

<figure><img src="/files/YsbhNa3cAQbq6NRYmgH9" alt=""><figcaption><p>Select 3D models</p></figcaption></figure>

**NOTE:** If you use more than one 3d model in your configurator, once you click "Preview" you will notice that they all "overlap" each other. Don't worry, in the "Create Options" tab you will be able to create options with restrictions (constraints) and hide the ones you want. This will be discussed in more detail in [**Restrictions**](/learning-the-app/products/create-options/restrictions.md).

<figure><img src="/files/dFeAi7jk3o1f6b4vYN2n" alt=""><figcaption><p>Preview</p></figcaption></figure>

{% hint style="warning" %}
**Simplio3D supports version control for 3D models, allowing you to update a configurator without the need to redo option sets. Learn more** [**here**](/learning-the-app/products/add-3d-models/3d-model-versions.md)**.**
{% endhint %}


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