Europe. You just walk to the register and point out the items you want to pay for. I've never seen a place where paying for a group of 6 separately would be a problem, it's the default and expected.
The more common way to settle this in my experience, if you're in a larger group, is to announce your intention to split the bill before ordering, and then the waiter can go through what groups or individuals will pay and can track them accordingly.