> For the complete documentation index, see [llms.txt](https://endash-guidance-docs.gitbook.io/docs/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://endash-guidance-docs.gitbook.io/docs/data/data-transformation/add-a-collection.md).
# Add a Collection
## Add a new Collection folder
* To add a new Collection folder, click on the + button on the top right of the sidebar.
* A new empty collection will be displayed.
## Add a child-Collection folder to a Collection
* You can add a child-Collection folder to a Collection by clicking on the + button of that Collection.
* The newly added child-Collection will be displayed under that Collection.
* You can also add a child-Collection by clicking the + New collection button at the top right.
* You will be directed to the details page of that child-Collection if you click that button.
* You can create as many as child-Collection as you want.
{% hint style="info" %}
* The breadcrumb navigation will help you know where the child-Colleciton belongs to.
* Click on a Collection on the breadcrumb will direct you back to that Collection.
{% endhint %}
