New player question regarding mob tagging

I've been scurrying around the forums looking for a definitive answer for mob tagging and I see all sorts of explanations:
-Mob tagging when a lower level character hits a mob and a higher level kills it and are not in the same party is allowed if it's two different humans playing
-Mob tagging is not okay at all
And a couple others but those seemed made up. So is mob tagging allowed on this server?
-Mob tagging when a lower level character hits a mob and a higher level kills it and are not in the same party is allowed if it's two different humans playing
-Mob tagging is not okay at all
And a couple others but those seemed made up. So is mob tagging allowed on this server?