How does the "Manage Seniority Dates" works for Grade and Job in Release11

Summary

Seniority Dates are not getting populated for Grade and Job

Content

Hi Everyone,

I have one query regarding the new configuration for the seniority date. As per the new feature in Rel11 ,I have did the configuration of grade and Job seniority dates, but not able to locate the place where to provide the seniority date for the Grade or Job?

Moreover,I am able to open the page for Manage Seniority Date from person management by selecting the  person but Seniority Dates at the assignment level is blank for all the three fields as (Attribute,Date and Length of Service).