Be Able to set Specific Hours for Exceptional Working Days

I ran into an issue about my SP's not being able to set specific hours/breaks for the Exceptional Working days.

If a SP wants to work on a specific day but specific hours for that day (lets say a half day on a holiday) - there should be a way to set that up. (Instead of just stating the day they can work)

The solution would be to allow SP/Site Admin to set the times they are available to work on the exception days in addition to the regular days. Sometimes the exception days are on days they normally can work, but want to create custom hours for a particular day.

Hoping this gets added!