> For the complete documentation index, see [llms.txt](https://docs.decube.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.decube.io/catalog/data-catalog/add-classifications-to-fields.md).

# Add classifications to fields

Add classifications to your tables so that others in your team can understand the sensitivity and handling requirements of each column within your data source. This functionality is available in the Schema tab within the Asset Details section.

In the Schema tab, you can see each column within your selected table and edit the row via the kebab menu at the end of each row.

<figure><img src="/files/BkLDrwL2aQ8mooBVhT7U" alt=""><figcaption><p>Example of a populated field catalog.</p></figcaption></figure>

{% hint style="info" %}
To make changes to the Schema tab, you need at least Edit access for the asset, which comes from the "Asset Details" policy. [Learn about source-based policies.](/group-access-policies/source-based-policies.md)
{% endhint %}

You can also add classifications via the rule-based classification tagging. See [Auto-classify data assets](/governance/auto-classify-data-assets.md).