> ## Documentation Index
> Fetch the complete documentation index at: https://clickflare.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.
# System1 Integration Guide
> Adding System1's Integration
To add a System1 integration to your ClickFlare account, begin by accessing the **Integrations Menu,** found in the *left sidebar.*
* Under *Revenue Stream*, click **Add Integration**.
* Begin by **naming** your integration and select **System1** from the list of supported Integration Types.
* Before adding your *Authorization Key*, choose the **custom conversion** you want to attribute the conversion event to.
To learn how to add a custom conversion in ClickFlare, follow our article [here](/docs/en/settings/custom-conversions).
* Then select the **Click ID** that is passing back the info to System1. Make sure to specify the right ID, be it Sub ID 1 or 2.
* To get your **Authorization Key**, you'll have to contact your System1 account manager. Once you have the key, paste it into its field.
* When you are done with the process, click on **Save,** and your Integration with System1 will have been completed.
For a more detailed explanation of this guide, follow the video below.
[Embedded media: https://www.youtube.com/embed/xT9KifWgoYI](https://www.youtube.com/embed/xT9KifWgoYI)