You can cancel booked meetings in the following ways:
1. Select "Warehouse" from the menu on the left and choose Bookings. (See guide to bookings Here)
2. Find the meeting you want to cancel and select the following icon next to the lead:
You have to choose a meeting in your column, then there will be a pop up where you need to press go to booking.
3. From "Meeting Status", select "Canceled" followed by "Update."