How do I adjust the Clamp Assembly on my Kreg Jig® K5 to accommodate different material thicknesses?

Press down on the ratchet release and slide the clamp assembly all the way back. Position the workpiece against the drill guide. Move the toggle handle to its full-down (clamped) position. Then, slide the clamp assembly forward until the pad contacts the workpieces. While holding the clamp mechanism against the workpiece, lift up on the handle until it clicks twice. Then, press the handle back down to the locked position.