If you're screens are duplicated / mirroring each other, you can adjust this quickly in your Display Settings! Follow the step-by-step instructions below to get everything set up.  MacOS Monterey (12.0 +): If you are using an earlier version of MacOS, follow the instructions in the video at the bottom of this article. 1. Click on the Apple Icon in the top left corner of your desktop.2. Open System Preferences.3. Select Displays.4. Select Display Settings at the bottom of the window.5. On the menu on the left side of the window, select the 2nd and 3rd options and ensure they are set to Use as: Extended display MacOS Big Sur (11.6.7) and earlier:If you are still having trouble, please schedule a support call with one of our Tech-Support Specialists and we will get you up and running!