You don't have Bromine in your pool, so you can disregard that reading. Just read the Chlorine side. When you put the CYA into your pool, either add it though the skimmer, or put it in a tube sock in the skimmer or tied in front of a return. Either way you add it, follow the label directions to get up to about 20 ppm for your side pool, and don't backwash or re-test for it for at least a week. It takes a LONG time to dissolve. In the meantime, you're going to have to keep adding chlorine nightly so that the sun doesn't wipe out all of your Cl while you're waiting on your stabilizer to dissolve.

Janet