Use the USB cable to connect the Hummingbird to the computer.
Start the Arduino program (Program in dock with the infinity symbol.)
Go to the Tools menu and hover over the board selection, then move to the Hummingbird Duo selection and click on it. (Probably at bottom of list, might have to scroll.)
Go to the Tools menu again and hover over the port selection, then move to a device that might have Hummingbird Duo as part of the name. If not try selecting a device that is not a bluetooth device.
Go to Tools a third time and select Ardublock.
Go to the Hummbird Arduino link in the MakerSpace website for complete instructions.