Our Kroger had two rows of mini self checkouts, 2x3, and adjacent it was a cashier checkout. They removed one of the rows of minis and replaced it and the subsequent with a conveyor self checkout instead, so 3 minis and 2 conveyors.

Now there are fewer places to check out, and the belted checkout is annoying as all hell to use. If you have 3 items it's wasteful to use it because you have to walk 5 feet to fetch your bags, and if you have a large cart of groceries you wouldn't want to self checkout anyway because it's a hell of a lot easier to have help.