Is it worth the effort to use time tracking tools that really do measure how time is spent at work?

Do you consider someone who works 3 days at home and 2 days in the office a remote worker? Where should the journey start for a first time PM? What should be the key things to focus on, learn?

I have experienced lag when there are more than 8 people joining a video call all at once. Do you have solutions or best practices to address issues like this?