When you are in a meeting, you can mention someone but put in between ( ) so you can private chat with someone. You can also add a range of people's names in the parenthesis to private chat with a group! For example, someone can mention my name and put it as (example) to private chat with me! Another example is (example, other example) to add more than two people on your private chat! This will help a lot because we would socialize more in a classroom without bothering the teacher!