I am sure somewhere on MacRumors this is covered. I apologize for my laziness in finding it. Three things I have not figured out how to do yet. 1. How do I set up one Mac to share desktop contents with another? I don't see that option. 2. How do I set up all my Macs to automatically unlock when I am wearing Apple Watch? Again, did not see that option in Security. 3. Finally, I thought I could drag any video from a web browser to the desktop to play while doing other things. That didn't work for me. Then tried it by asking Siri to display certain videos. Could not drag those either. What am I doing wrong? Thank you, in advance, to anyone that takes the time to answer.