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Is there a way to customize the booking form ? I want to be able to add a  pre-populated read-only or hidden field  which to be send to an external/integration system?  . 

Hey @Marta,

 

Michael G with developer support here at Calendly, and I'd love to help!

 

You can track the source of your invitee using UTM parameters.

If you've added the Calendly embed code to your private website, the embed code will automatically look for the following UTM parameters in the URL address on the parent web page:

  • utm_source
  • utm_medium
  • utm_campaign
  • utm_content
  • utm_term

NOTE: There is a 255 character limit for UTM values. Values that exceed this limit may not be passed.

 

More information can be found here as well: Source tracking with your Calendly embed and UTM parameters

 

Hope this helps!


Thank you ! The provided solution meets the needs of my  project.