If you cannot find a suitable category, choose the most applicable category. You can add the missing category in front of the name in the alternate name field.
Example: Butcher Sans Os
- main Waze Category: Supermarket/Grocery.
- Primary name: "Sans Os".
- alternate name: "butcher Sans Os"
Note that when the name in itself is clear enough indicative for the kind of Place (ING, Décathlon, Carrefour, etc.) there is no need to put a category in front of the name.