Issue

I have to create a tally of daily hours worked by employees who Check In and Check Out of dog walking jobs on an app to record the job as being completed.  I can download the data and have set up a pivot table and slicers to isolate 2 conditions

1.  Column A (Employee Initials)
2. Column B (Date of Service)

I then have a MIN and a MAX formula run off of the pivot table and use that to generate the hours worked.  It provides what I need, but it is a very manual process (I have to use the slicer to change the employee and date for each entry, and enter them one at a time).  I am looking for a formula that will give me the MIN and MAX for each employee, by date, and return a "0:00" on days they don't work. I have not been successful at creating this myself unfortunately.

I am using O365 / Windows 10 pc.

2 week sheet is attached, thanks in advance for any help with this.