How To Cancel An Unpaid Booking
Within your activity head to the All Teams tab
Click on the Action Cog beside customer's name
Select Remove from Activity
Click OK
The booking will be removed, and the unpaid invoice will be voided
How To Check Voided Invoices
Head to the Money and All tab
You can also check the Void tab by selecting the + → Void
You will see your recently voided invoices listed here