> ## Documentation Index
> Fetch the complete documentation index at: https://docs.omni.co/llms.txt
> Use this file to discover all available pages before exploring further.

# Testing access grants and permissions with user impersonation

> Use Omni's impersonation feature to view the application as another user and verify that access grants and permissions work correctly.

<Note>
  **Organization Admin** permissions are required to impersonate other users. Additionally, admins can't impersonate other admins.
</Note>

The **Impersonate user** feature is useful for testing that access grants work as expected.

## Impersonating users

<Steps>
  <Step noAnchor>
    Navigate to **Settings > Users** and click on a user. **Note**: If testing an [access grant](/modeling/develop/data-access-control), the user must have a [user attribute value](/administration/users/attributes) that excludes them from the grant.
  </Step>

  <Step noAnchor>
    At the bottom of the user's details page, click **Impersonate user**.
  </Step>

  <Step noAnchor>
    Create a new workbook based on the connection you want to test. In this environment, you can verify what the user would and wouldn't have access to and adjust their permissions accordingly.
  </Step>
</Steps>

## Impersonate vs View As

Omni provides two ways to test content as another user:

* **Impersonate user** provides a full-session simulation where you experience Omni exactly as that user would. This includes all role-based restrictions, connection access controls, and permissions. Access it from **Settings > Users** by clicking on a user and selecting **Impersonate user** at the bottom of their details page.

* **[View As](/visualize-present/dashboards/view-as)** is a quick preview mode available in dashboard and workbook **File** menus. It applies the selected user's attributes to resolve dashboards, filters, and access grants, but does not simulate role-based restrictions or connection access. Use this for quick user attribute testing without leaving your current context.

Use **Impersonate** for comprehensive testing that includes role-based restrictions and connection access. Use **View As** for quick user attribute testing.