Zenkit

You're already familiar with folders for organizing your projects, but there's something even better—subfolders. Subfolders allow you to create a more detailed and hierarchical structure, making it easier to manage complex projects by categorizing related files within specific sections. This organization method not only streamlines your workflow but also ensures that important lists are always easy to find.

Your list and folder hierarchies can easily be viewed from within your navigation panel. To create a new subfolder, open the desired folder, to which you would like to add a subfolder. 

You will see all your lists and existing subfolders in one overview. To create a new one, simply click "Create" in the top right corner.

This will show you all the possibilities of what you can create within your folder. Select "Subfolder" and click "Done" straight after. Give your new subfolder a name and click "Create" in the top right corner of the pop-up window. Add any members you want to share your folder with.

Your subfolders will be listed at the very top of their parent folder. Collapse or expand all your folders to match your desires and workflow.

Subfolders can also be added via the navigation panel. Simply hover your mouse over the corresponding parent folder and click the "+" icon that appears. Follow the same steps as above to complete adding this subfolder.