The interface has been laid out to be as simple as possible for the user.
The Sidebar on the far right is where you navigate the admin panel.
Each green square represents a 30 minute block of time.
At the top left you have the Time, which when clicked, will update the interface to the current date and time.
By hovering your mouse curser on the times on the left and right of the green squares, you can use your scroll wheel to scroll through the times, you can also use the Time Selector in the top middle of the page to do this. You can scroll through the bookings by Date using the Date Selector in the top right.