I have small, round pads that are to be loaded in my revolver. Where do they fit in?

I've never owned a black powder revolver that used pads; those are for rifles. When using a rifle, you would place the patch between the powder and the ball. On a revolver, you don't use a patch. You place your powder (30-40 grains of parade loose black powder if you're rocking a .44, 40-45 for a .45) and then add a tightly fitting round ball. You then add some grease to keep more than one chamber from going off at a time due to a rouge spark of powder poured out. After that, you place caps on the cylinder nipples, and you're ready to go.