Displaying rating history for Competencies

Summary

Displaying history of competencies and ratings in Skills and Qualifications.

Content

Moving to Talent Profile v2.(19C).  We have a business requirement to display the history of ratings as they update by the employee and the supervisor.

For example on 9/3/19 the employee adds "Agile Development" to her competencies.   She rates herself at a 2 (Working Knowledge).   Her supervisor on 9/4/19 adds the same competency and rates her as a 2.   On 10/1/19, the supervisor updates the rating from a 2 to 3 (Extensive Experience).  Currently, when updating the rating and date are replaced with new values as opposed to creating a new row of data to display the history.