Re-calculate allowances when adding public holidays

The government in Thailand announced extra public holidays for last year, this created some issues in Appogee HR. 

When we added the public holiday to everyone’s calendar and people already had approved holiday over that period, they did not automatically get this day added back to their holiday balance.

Can the system give the option to recalculate employee's allowances when adding public holidays over the leave they have booked in the system already?