You can do an override to change the number of pay periods to obtain the desired amount. To do this you will:
From the main menu select Enrollment Editor (link on left side of page)
Search for the employee you wish to modify
Select “change” link for the Flexible Spending Account you wish to modify
Modify the Number of Pay Periods as desired*
Enter a note as to why you are making this change
*The current per pay period deferral amount will remain the same and the Current Annual Election will automatically be recalculated when the Number of Pay Periods is modified. Be sure to confirm the amounts before selecting save.