> For the complete documentation index, see [llms.txt](https://docs.cronosid.xyz/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.cronosid.xyz/user-guides/cronos-id-domains/sub-domain/editing-controller-of-sub-domain.md).

# Editing controller of sub-domain

{% hint style="info" %}
Only the controller of the parent domain will be able to edit the controller of the sub-domains.
{% endhint %}

**Step 1.** Go to Cronos ID homepage and click “My Domains”. Here you can view all the domains you own and the sub-domains under each of them.

<figure><img src="/files/KJZOWndP3j2BNkmNTlmu" alt=""><figcaption></figcaption></figure>

<figure><img src="/files/qEUCygxFHajitPxcIzr2" alt=""><figcaption></figcaption></figure>

**Step 2.** Go to the parent domain of the sub-domain that you want to edit, click “Manage”.

<figure><img src="/files/1ZvIM79S3aYLeLaujqyX" alt=""><figcaption></figcaption></figure>

**Step 3.** (a) Click on the sub-domain that you want to edit.

<figure><img src="/files/dusfCIawtPe4RWQfYHTQ" alt=""><figcaption></figcaption></figure>

(b) Click on the edit button next to Controller

<figure><img src="/files/KdJ35XBQ8nHwP2qvqgjz" alt=""><figcaption></figcaption></figure>

**Step 4.** Enter the wallet address that you want to transfer the ownership of the sub-domain to. Then click “Change Controller” and confirm the transaction approval on your wallet.

<figure><img src="/files/oNAvz82T3Eaj9SQ8Q3z2" alt=""><figcaption></figcaption></figure>

**Step 5.** You have successfully changed the controller of your sub-domain!

<figure><img src="/files/FI08Ky5861EM3oubwZDk" alt=""><figcaption></figcaption></figure>

<br>


---

# Agent Instructions
This documentation is published with GitBook. GitBook is the documentation platform designed so that both humans and AI agents can read, navigate, and reason over technical content effectively. Learn more at gitbook.com.

## Querying This Documentation
If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter, and the optional `goal` query parameter:

```
GET https://docs.cronosid.xyz/user-guides/cronos-id-domains/sub-domain/editing-controller-of-sub-domain.md?ask=<question>&goal=<endgoal>
```

`ask` is the immediate question: it should be specific, self-contained, and written in natural language.
`goal` is optional and describes the broader end goal you are ultimately trying to accomplish on behalf of the user. GitBook uses it to tailor the answer towards what is most useful for that goal.

The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.