> For the complete documentation index, see [llms.txt](https://docs.umbraco.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.umbraco.com/umbraco-ui-builder/17.latest/collections/child-collections/child-collection-groups.md).

# Child Collection Groups

A child collection group is a container for other child collections. Its purpose is mainly to provide a logical grouping of multiple child collections to help with organization and an improved user experience.

![Child Collection Groups](/files/UzedEGWW6Lo67dgisHdL)

## Defining a Child Collection Group

You can define a child collection group by calling one of the `AddChildCollectionGroup` methods on a given collection config builder instance.

### Using the `AddChildCollectionGroup()` Method

Adds a child collection group to the current collection with the specified name and default icon.

#### Method Syntax

```cs
AddChildCollectionGroup(string name, Lambda childCollectionGroupConfig = null) : ChildCollectionGroupConfigBuilder
```

#### Example

```csharp
collectionConfig.AddChildCollectionGroup("Family", childCollectionGroupConfig => {
    ...
});
```

### Using the `AddChildCollectionGroup()` Method with Custom Icon

Adds a child collection group to the current collection with the specified name and custom icon.

#### Method Syntax

```cs
AddChildCollectionGroup(string name, string icon, Lambda childCollectionGroupConfig = null) : ChildCollectionGroupConfigBuilder
```

#### Example

```csharp
collectionConfig.AddChildCollectionGroup("Family", "icon-users", childCollectionGroupConfig => {
    ...
});
```


---

# 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.umbraco.com/umbraco-ui-builder/17.latest/collections/child-collections/child-collection-groups.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.