It is indeed quite random. Each stower has a rate, and in order for us to make that rate, we can stow in almost any bin. Some other constraints include using th

It is indeed quite random. Each stower has a rate, and in order for us to make that rate, we can stow in almost any bin. Some other constraints include using the smallest bin possible for each item and not stowing heavy items up high (the scanner restricts stowing "heavy" items up top).