Time account in the monthly calendar 4.0 with entries & exits instead of "Current month"

It sometimes happens that employees are permanently paid hours from their working time account. While these are shown as minus hours under "Current month", any overtime for the month is offset. This means that it is sometimes not immediately clear what has happened in the month.
For this reason, the monthly calendar 4.0 should not only show the difference between "Previous month" and "Total" → "Current month", but also the additions and/or deductions individually.
The same should also be shown to the employee in the time account tile.