To place an offering, click on what looks like a totem topped by a big kerra hand pole in the following locations (they circle the outer edge of Kerra Isle). If you have a flying mount you can obtain the update while hovering over the ward to avoid having to fight anything. If you have a leaper, you can land in the palm of the hand.
Place offering at the first ward {At Tiger Pit Island} ( 1301, -28, 2516 ) Copy/waypoint 1301, -28, 2516
Place offering at the second ward ( 1304, 13, 2338 ) Copy/waypoint 1304, 13, 2338
Place offering at the third ward ( 1432, 14, 2366 ) Copy/waypoint 1432, 14, 2366
Place offering at the fourth ward ( 1480, 23, 2214 ) Copy/waypoint 1480, 23, 2214
Place offering at the fifth ward ( 1464, 24, 1997 ) Copy/waypoint 1464, 24, 1997
Place offering at the sixth ward ( 1136, 12, 1929 ) Copy/waypoint 1136, 12, 1929
Place offering at the seventh ward ( 1052, 18, 2088 ) Copy/waypoint 1052, 18, 2088
Place offering at the eighth ward ( 1077, 6, 2276 ) Copy/waypoint 1077, 6, 2276
Place offering at the final ward ( 1181, 13, 2377 ) Copy/waypoint 1181, 13, 2377