> For the complete documentation index, see [llms.txt](https://docs.truedat.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.truedat.io/v8.9/administration/hierarchies.md).

# Hierarchies

As an administrator, you can create hierarchies for defining templates. In the **Administration** module, select **Hierarchies** to view all defined hierarchies and their details.

<figure><img src="https://content.gitbook.com/content/bMpgLX0GW3HZfG99dDhX/blobs/RuN6Q6aDHYVddFAuwlff/image.png" alt=""><figcaption></figcaption></figure>

Legend:

<img src="https://content.gitbook.com/content/bMpgLX0GW3HZfG99dDhX/blobs/xAiVFnUm9vnpWXKO4LCp/image.png" alt="" data-size="line">: Node with nodes underneath. Clicking on this icon will expand the sublevels.

<img src="https://content.gitbook.com/content/bMpgLX0GW3HZfG99dDhX/blobs/b4CoVK5vCPdCrvgIlDxz/image.png" alt="" data-size="line">: Node with nodes underneath that are already visible. Clicking on this icon will collapse the sublevels.

<img src="https://content.gitbook.com/content/bMpgLX0GW3HZfG99dDhX/blobs/T7MmVJ7teMMMVIK7lujn/image.png" alt="" data-size="line">: Node at the lowest level.

#### Create new hierarchy

You can create a new hierarchy in the web application or by uploading a CSV file. The file must use this structure: "id,name,parentId,description". Consider the following:

* The `id` and `parent_id` values must always be numeric.
* If `parent_id` is empty, the node is considered a first-level node.

#### Edit existing hierarchy

You can edit an existing hierarchy in the web application or by uploading a CSV file.