Ok so I'm relatively new to the Apple world and recently bought an iMac. I am taking an online course which is needing me to download an application in order to take a quiz without allowing other applications to be open at the same time. My professor labeled this a "high-stakes" assignment. My problem is that after downloading the file for my quiz, it still won't actually open and gives a message about how this application is from an unknown developer and Apple doesn't allow this. I went through the steps to bypass this but still have not been successful. Does anyone know of any other tricks or able to point me in the right direction? Thanks for your help!