The Work-Relay Forms is very flexible and powerful tool for building lightning ready user interface. The Work-Relay Forms could be used in any place in your SalesForce Application. 

With the Work-Relay Forms you can build fully dynamic interface that may interact with user and any other SalesForce Application components.

The Work-Relay Form provides a powerful drag-and-drop form builder that includes extensive functionality:

• validation across fields 
• components events
• custom actions
• dynamic hide/show/clear fields and page sections based on conditions 
• multi-page form wizards 
• nested forms that allow a “form within a form” capability so that forms can be re-used, and can be from any data source
• lists and related lists