By default you should have at least one den folder, and you can buy more at the bottom of your den page for 10 apples.
![image.png](https://i.postimg.cc/VNxwYjQ5/image.png)
To access the manage folders menu, just click the button 'manage folders'.
This menu allows you to buy, create, delete and edit folders.
To move a wolf to a folder, hover over the 'quick view' button to bring up the extended info, and then select your folder from the drop down menu
![image.png](https://i.postimg.cc/xdT5c7Q4/image.png)
If you're interested in what features premium vs basic members have, I'd recommend checking out the
game guide.