For date fields that do not have a Date Picker (see screenshot), you can edit the date directly by typing in the new value.
Please note: When editing a date, you must not change its format.
If you edit a date and change it such that it is out of the valid range for dates, the date turns red to alert you to the error. If you place the mouse cursor over the invalid date, an error message appears (see screenshot).
If you try to change the format of the date, the date turns red to alert you to the error (see screenshot).