If a previously created reservation needs to be cancelled, then click on the Checkerboard, find the reservation and left-click on it.
The booking opens. Next, click Actions and select from the drop-down list.Cancel.
A window will appear in which you need to specify the reason for the cancellation. Once you have filled in this field, click Cancel.
After that, a confirmation window will appear stating that the reservation has been cancelled. And it is no longer displayed on Chess.
To view cancelled bookings, go to the Booking Log section and click on Search and filter.
Set the desired period in Show select Only cancelled ones. Click Apply. After that, only the cancelled bookings for the period that you set will be displayed in the booking log.