# Selecting the active model for the entity type

Before you can use a model-based entity type, you must select the model to use.

On the model list page, the active model is marked as **Active**.

To change the active version:

1. Hover the mouse over the model to make the active model for the entity type.
2. Click **Activate**.

<figure><img src="https://3072847115-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FvOPn7KQptPWmS5iKg5P0%2Fuploads%2FIQRRqZoU0r9onk1bm96R%2FCustomEntityTypeModelModelActivate.png?alt=media&#x26;token=bc905b7e-8cb9-4b7d-9c57-a72a8fa5e2bc" alt=""><figcaption><p>Activate option to select the active model for a model-based custom entity type</p></figcaption></figure>