Auto Review is a feature that allows you to assign reviews of pull requests automatically. Every time you create a pull request it will automatically be added in the reviewer queue to speed up the review process, as opposed to having to manually submit it in the dashboard.
The most common use case for this feature are for companies who need continuous code reviews, normally those developing larger-scale apps. In order to enable this feature, you need to schedule a meeting with your account manager, which you can do through the Open Commit dashboard.
Note: This feature is only available for GitHub repositories.