Add a Green Checkmark for Completed TimeSlots in the Calendar

What is the problem you are trying to solve?

When all tasks within a TimeSlot are completed, no green checkmark is displayed in the calendar.

In your mind, what does the feature look like?

A green checkmark should appear next to the TimeSlot once all tasks within it have been completed, similar to how a completed individual task is marked in the calendar.

If this idea is implemented, what is the long-term benefit to your business?

Simplicity, as it would clearly show whether or not the TimeSlot has been fully completed.