Follow the (5) Steps below, and then press the UPLOAD FILE button
After pressing the Upload File button, look for the large 'Success' Text confirmation below
To ensure Files uploaded are successfully, it is helpful to view the file that has been uploaded by a teacher. A PBN viewer is located here, so you can spot check the file you have uploaded is in fact the file you want!
Upload your file first, then after a successful upload, select the slot you just uploaded to, and then check it as correct. You can view board by board as it will appear in the Teaching Room.