By default, all text fields are required. This behaviour is determined by the script but you can make all fields optional by doing the following:
- The form should be selected.
- Click Form on the left side
- Go to the Tools menu and select Custom Script Assistant.
- Make sure Object Events is selected
- In the Contents box you should see this code: onsubmit="return weCheckForm(this)"
- This needs to be deleted or replaced with: onsubmit="return true"
This will allow any fields to be empty and the form still submitted.