# Authentication

{% hint style="info" %}
The username worksheet and username column settings are only applicable if you are not using SSO as authentication method.
{% endhint %}

We use the username of the logged in user (derived with the Tableau Username() function) to audit, monitor and manage the operation of the extension. The username should be available on a Tableau sheet and we recommend to not change these setting once they are set properly.

#### Other options

You can show a logout button to log out after you have used WriteBackExtreme. You can also set a timer to automatically logout after a certain period.

<figure><img src="/files/ok8lIreotuB7ILNyeoRo" alt=""><figcaption></figcaption></figure>

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