Who needs to learn etiquette? When and where is it important?

Zoom Link:
https://us05web.zoom.us/j/89212924180?pwd=K0d6dXphc1VZVVZ0ZVpQTXhndDdhZz09

Who?:
-Children
-Teenagers
-College Graduates
-Job hunters
-Professionals
-Single Ladies
-Etc.

When and Where?
-Workplace
-Restaurant
-Parties
-Zoom
-Church
-Weddings
-Etc.