Grate a fine zest off the oranges. Then, I found it easiest to cut the orange in half the cut around the outside if the rim of the orange down 2/3's of the way the digging your fingers in from the center and work your fingers down and out by the outside of the orange. Then go around and juice the orange and dig out any extra bits of orange. believe me I tried everything at it was by far the best and fasted way to remove the orange insides.
Add everything but the peach schnapps and the fruit pectin. Bring that to a boil and then low boil it for 30 minutes stirring often and watch it closely.
Add the peach schnapps and the fruit pectin and cook 5 minutes