There are actually 2 different bands , 1 arioound belly button height (minus about 2" around the button) and another 1 down lower. Basically look where the belly curves out a little more, that’s the fatty tissue you should be shooting into.
I was taking shots there for about 5 years and pump infusion sites for the last 15 years, still works fine. I just rotate counterclockwise (could be clockwise, if you wish) from Right of BB, Right Lower, Left Lower, Left of BB, then repeat. Having 4 distinct areas gives your skin a chance to heal reasonably. Of course there are also the “love handle” on either side or the upper butt, though that can get tricky if you wear belts.