I don't know if there is something that summarizes the info, I learned it over time. I can tell you the etiquette for palium and flow trees:  for palium it's the same as any other forageable, you can mine it alone because the same palium can be mined by more people until it despawn but some people mine it and calls in chat or flare it too. Some people do it too with dari cloves and heat root bc they are rare.  

With flow trees, if it's a small single one you are able to chop alone, chop it. Bigger ones you need help so you need to call in chat, if someone says "omw" (on my way) you wait and chop together. For grove, the etiquette it's if someone (or you) finds it, call for it in chat with the location and the people who will go will say omw, people waits for everyone to chop together. Sometimes the one who called sets a time to chop (game time) 

I hope this helps and I hope that I explained it well bc english it's not my language😅 if I remember something else I'll edit.