Many professional firms require that all time is entered by a specified date and that no time can be entered for a previous date after time entry is due.

For example: Everyone must submit their time by the 15th of the month. The time up to the 15th then needs to be "locked" to prevent any time for being entered on it beginning with the 16th. 

Is there a way to achieve this in Zoho People? Our timesheets are automatically approved based on established approval settings but I do not see any date fields that would assist with creating a requirement that the time is not in a previous period.