Divide potatoes, salmon, shrimp, sausage and corn among four pieces of heavy-duty foil (about 18x12-in. rectangles). Drizzle with oil; sprinkle with seasonings. Squeeze lemon juice over top; place squeezed wedges in packets. Fold foil around mixture, sealing tightly., Grill, covered, over medium heat 12-15 minutes or until fish just begins to flake easily with a fork, shrimp turn pink and potatoes are tender. Open foil carefully to allow steam to escape.