> For the complete documentation index, see [llms.txt](https://docs.lightact.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.lightact.com/licensing/applying-a-license.md).

# Applying a License

To start using your LightAct license, you first need to apply it within the program. Go to **Edit** and choose **Preferences**.

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

In the Preferences window, under the **Licenses** tab, you will see all of your licenses listed. To activate a specific license, just click on its dedicated **Apply** button.

<figure><img src="/files/lj866WEbxNaWVGzeAp8S" alt=""><figcaption></figcaption></figure>

If you hover over **Features:** you'll see all of the features enabled in your license.

{% hint style="info" %}
**Good to know**: If your license has expired, you will see a message saying *'This license needs to be upgraded'* in the Licenses tab. You can update it by following the instructions from the [previous ](/licensing/adding-or-updating-a-license.md)chapter.
{% endhint %}