How do you get the arrows to change in warehouse Pokemon?

It seems you are talking about a Pokemon game that involves warehouses and arrows. However, there isn't a specific game called "Warehouse Pokemon" that is widely known.

To help you figure out what you're looking for, I need a bit more information. Could you please tell me:

* What game are you playing? Is it a fan-made game or a specific official Pokemon game?

* What kind of arrows are you referring to? Are they directional arrows on the screen, or are they something else related to the warehouse?

* What do you mean by "change"? Do you want them to point in a different direction, disappear, or change appearance?

Once I have more context, I can give you more accurate and helpful information. 😊