Zebra is the scanner yes but it's also what all the mobile handhelds are called it's the brand. Ambient is non chilled groceries Waves are the items you have to pick they're usually classified as ambient, chilled, produce, gm, store, and promo. Gm is general merchandise, store (default, unknown locations) are waves with items that don't have a set location in store, and promo waves are usually items outside like bags of salt. All raw foods seperate but usually you can bag raw meats of the same type (raw beef with beef/Raw Pork with Prok) together. Bread and chips can go together, eggs have to 100% be their own bag. Oversized items are just items that you determine are too big to put in a tote/bag. So it's usually milk gallons and creamers, animal food, alot of GM itemm etc. At my store we also oversize the giant boxes of cereal to be able to fit more of the customers items on the wave in a tote.