I have gone through the doc. https://doc.sitecore.com/developers/93/sitecore-experience-manager/en/walkthrough--creating-a-custom-submit-action-that-updates-contact-details.html
In the section "Add a folder that contains parameters for the editor" There is a table with column headers; FormDropList, Parameter, ValueFieldName, DisplayFieldName, FormLabel, BindingConfiguration I wanted to know what should be the value of the columns.