Receive Frenzy Root that you received from the captain.
Travel to the Ree orc camp, west of the nomads. ( 80, -48, -755 ) /waypoint 80, -48, -755
Let 5 orcs taste the frenzy root:
Place the frenzy root in the path of one of the wandering orcs not already under the Frenzy effect where they will pick it up. If you mess up the placement of a root you can pick if up off the ground.
The simplest way to get an orc to interact with a root is to walk right up to an orc, place the root where he is standing, run away to break the encounter, follow the orc back and when he runs back to his spot he will always grab the root.
Examine the chest in the camp to find the Ree Orders. ( 73, -47, -756 ) /waypoint 73, -47, -756