On User Input is a field action that triggers any script once a field value is given/modified. Note that this section is executed in the Same page before submitting the Form data. You would see a spinning wheel immediately once the script starts executing.
- Edit your application (by clicking on Edit this application link, or from the home page, click on the Edit link next to your application)
- Select your Form from the Forms tab.
- Mouse hover to the corresponding field and click on “Actions on User Input“. That will take you to the script section.