Date Slicer does not modify Table

I have a dateslicer (Timeline 2.4.0) which is based on CalendarAuto Date.  I have a table that lists employees with a Start Date and Exit Date column.  what I want would be if I change the slicer it shows all people with no exit date (current staff) and all people who exited during the selected date range.  It does not work that way now.  How do I tie the rows in the table to the slicer based on the logic of if the exit date is null OR the exit date is within the date slicer parameters?