As an administrator you can modify an employee's account balance at any time, following these steps:
Navigate to the employee's profile.
Click on their Paid Time Off tab.
In the desired policy, click the arrow next to the policy name.
Click the Modify Balance link in the menu.
Add or subtract the desired number of hours.
Provide an optional note if desired.
Save your changes.
The employee's balance will immediately update to show the modification, and an entry will be added to their Transaction History.
Note: If you need to update a lot of employee balances, you might want to consider doing that via a file upload as explained in this article.