

Add the desired field on your update action layout.Create an action of type update on your object.This component is supported in API version 39.0 and later. This functionality is possible because the component uses actions. Use the Related Record component to display the details of a related record, including the details of a parent record in your Lightning page. This component provides your users with built-in record creation, inline edit, and the ability to unlink a record and link a new one. To achieve the above ask, Salesforce provides us a standard Lightning Component called Related Record which comes to rescue you in this situation.

Also, Using Lightning Component is not recommended as it will impact the page performance and looking for point and click solution in Salesforce.

Those fields are not required for classic Users. Your users want you to show a particular set of fields only in Lightning Experience but not in Classic Interface.
