The distributor needs to be locked out. The engine needs to be turned until the 32 degrees that you want, is lined up to the timing pointer. When that is set, then move the mag pickup to line up with the wheel magnet. The main problem you're going to run into is the rotor phasing. It needs to line up at full timing, but be close to still work when your timing gets pulled out. If you don't pull a lot out, you should be able to find a happy medium.
When the mag pickup lines up with the mag on the wheel, the cap and rotor need to be lined up to the cylinder that is firing. If you do this with the crank at 32 degress (reading at the timing pointer) the engine should be firing #1 or the cylinder that is half way through your firing order.
Hope this is what you were looking for.