For all Timetastic approvers, managers and Admins (on Pro or Business) there's a new toggle in your email preferences which we've turned on: 

Negative balance alerts!

Once a month you'll get a summary of who has a negative balance giving you the opportunity to check or amend a user's allowance or bookings.

That's it, super simple but hopefully useful for seeing when one of your users balances has gone awry.