"Etiquette rules" refers to a set of polite and respectful behaviors or guidelines that people follow in social situations or specific contexts. Full definition
Do nt forget to keep these dating etiquette rules in mind the next time. (petesgrillandpizza.com)
The online world doesn't have these kinds of etiquette rules for «real world» activities, but that doesn't stop one's peers from being left with a bad impression. (slaw.ca)
This site explains all the proper etiquette rules for Our Flag. (theinspiredroom.net)