> ## Documentation Index
> Fetch the complete documentation index at: https://developer.z-api.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Group settings

> Change group preferences and settings

## Overview

This method allows you to change group preferences.

<Info>
  Only administrators can change group preferences.
</Info>

***

## Attributes

### Header

<ParamField path="instanceId" type="string" required>
  Your instance ID. Available in the Z-API panel under **Instances**.
</ParamField>

<ParamField path="token" type="string" required>
  Your Z-API instance token.
</ParamField>

### Required

<ParamField body="phone" type="string" required>
  Group ID/Phone
</ParamField>

<ParamField body="adminOnlyMessage" type="boolean" required>
  Only administrators can send messages
</ParamField>

<ParamField body="adminOnlySettings" type="boolean" required>
  Only administrators can change group settings
</ParamField>

<ParamField body="requireAdminApproval" type="boolean" required>
  Admin approval required for new members
</ParamField>

<ParamField body="adminOnlyAddMember" type="boolean" required>
  Only administrators can add members
</ParamField>

***

## Request Body

```json theme={"theme":{"light":"github-light","dark":"poimandres"}}
{
  "phone": "120363019502650977-group",
  "adminOnlyMessage": true,
  "adminOnlySettings": true,
  "requireAdminApproval": false,
  "adminOnlyAddMember": true
}
```

***

## Response

### 200

```json theme={"theme":{"light":"github-light","dark":"poimandres"}}
{
  "value": true
}
```

### 405

Make sure you are correctly sending the method specification, that is, verify that you sent POST or GET as specified at the beginning of this topic.

### 415

If you receive a 415 error, make sure to add the "Content-Type" header to your request, which in most cases is "application/json".