minor addition for etiquette (#1498)

Author: chinar-amrutkar

org-cyf-guides/content/virtual-class/index.md

@@ -10,9 +10,13 @@ Some tips we've accumulated through experience:
 * **Webcams**: Encourage everyone to turn on their webcams, it's more engaging.
 * **Roles**: Have people add "Trainee" or "Volunteer" to the end of their name, to easily identify people and also put people into breakout rooms.
 * **Popcorning**: If you're trying to have everyone talk about something, have everyone raise their hands, and lower their hand after they've spoken. Then you can tell who hasn't spoken yet.
-* **Cold calling**: Say a name of someone to answer a question, don't just say "Who wants to answer"
+* **Cold calling**: Say a name of someone to answer a question, don't just say "Who wants to answer".
 * **Breakout rooms**: Set up breakout rooms intentionally - make sure you have at least one volunteer in each room, and mix up who is working with whom.
 
+
 ### Zoom-specific
 
 * **Hosts**: Make sure you know how to claim host. Hosts can manage breakout rooms much better than co-hosts or non-hosts.
+
+### Virtual Meeting Etiquette
+* **Mic**: Mics are stay muted by default, unless it is their turn to speak. Request everyone to mute after they have finished speaking.