To add a System1 integration to your ClickFlare account, begin by accessing the Integrations Menu, found in the Settings Menu (gear icon).

• Under Revenue Stream Integrations, 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.
• 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.