It sucks to set up. First you need the newer hunter (or similar road force style machine). Select the patch setting. You can set it up for either dynamic (dual) or static (single) patches. The road force roller measures the tires loaded hieght (via lever arm on the roller & air bag pressure). It then spins the tire as normal and highlights the heavy spots (showing patch placement). You then have to mark the tire for these points, and mark the tires location on the wheel. You now get to dismount the tire, glue on the patches (kinda like a repair) and remount the tire and math it to the wheel like it was before.
This method is only good for long haul tires as normal passenger and light truck tires wear to quickly (thus changng the balance points) to actually benifit from this procedure. The shop I work at just uses tape-weight if the customer doesn't want weight on the outside (or the rim face won't allow weight). We also do everything, from F550's and their 19.5 semi tires, to bling bling 26's down to 13" civics, 8" wheelbarrow/trailer, and even ATV tires. All in one shop. Obviously we don't balance all of these listed.
Hope that helps