Gray water tank valves on new Laredo 5th wheel

Thank you for your suggestion. This morning I finally found it :) On my 292 RL it was located on the frame under the outside shower compartment where the other valves are. Why, oh why, is nothing in the booklet... No diagram of what drains into which tank.
I'm not a first timer either, but this was crazy.
I only got a hurried tour of my RV once it was set up on the lot, both the delivery man and I were soaked to the bones at about 40 degrees F!