Clearly mark the distinction between old and new Work Profiles on an employee's YAAG

Hello team,

It would be useful to be able to add the start date an employee joined a Work Profile. Then the Year At A Glance Calendar (YAAG) should display the start date of the Work Profile the employee has been recently added to. Visually you would see the months the employee was associated with the old Work Profile and the months the employee has been associated with the new one. 

Thanks!