How to make a field Required
You can make any field "Required" in your widget, which means that your visitor has to enter the information in that field to be able to submit the form.
- Go to the Content section in the widget editor. Expand the "Edit form".
- Check- or Uncheck the Required checkbox next to each field.
- In this example, Email will be a required field, but not Name. To make it easier for the visitor, you can type "(optional)" in the placeholder of the non-required field.