The first thing the order ask me is to go help fellow knight in umar hill.But i cant find them......i know i must do it fast and i think im doing it fast enough.But where am i supposed to find them and where in the map are they.I killed 3 knight in the hillsfar map the 3 that looked like monster.Do i need to trigger something beside getting the quest?

You have to go straight to Umar Hills, if done in time a Knight of the Order will meet you and show you the place. If not in time...I don't know. I didn't have to do any other quests to trigger that thing.