DEAR READERS: Clearly, I hit a nerve with the discussion about videoconferencing from home and whether you should turn your camera on. Because so many of you continue to write in about this, I have chosen two more letters to share with you. Working from home and navigating professional engagements without the supports and rhythms that we had only a few months ago has changed the dynamic of our lives dramatically. We are all working to figure it out. Here are some of your ideas on this hot-button topic.