Sorry about that, completely forgot about that picture. At least how I would approach this, I would get the controller centered in a good spot, then sketch a rectangle the desired size and extrude it to the desired thickness. From there, I would move the controller to where the controller is into the block about however deep you want the handle cutouts to be, and I would create an offset plane on the top face of the block. I would use that plane to split the body of the controller and make the top part invisible. I would then make the block opaque and do a section analysis about halfway for the first handle you choose to design for where its cutting into the wood, and design how it needs to be routed out, do the same for the second handle, and anything else you choose to have in the wood block. You, or anyone else, may have an easier approach, that's just how I have found things easiest so I am able to see exactly where I need to project the handle onto the piece of wood in order for me to create my sketch.