---
title: "addGroup(with:completionHandler:)"
framework: matter
role: symbol
role_heading: Instance Method
path: "matter/mtrbaseclustergroups/addgroup(with:completionhandler:)"
---

# addGroup(with:completionHandler:)

## Declaration

```swift
func addGroup(with params: MTRGroupsClusterAddGroupParams, completionHandler: @escaping @Sendable (MTRGroupsClusterAddGroupResponseParams?, (any Error)?) -> Void)
```

```swift
func addGroup(with params: MTRGroupsClusterAddGroupParams) async throws -> MTRGroupsClusterAddGroupResponseParams
```