Update README.md

README.md

@@ -77,6 +77,14 @@ If you want to associate some additional info with your customer, you can set Cu
 LiveChat.setVariable(withKey:"Variable name", value:"Some value")
 ```
 
+### Assign chat to specific group
+
+You can route your customers to specific group of agents by providing groupId. More information can be found here: https://www.livechatinc.com/kb/dividing-live-chat-by-group/.
+
+```swift
+LiveChat.groupId = "7"
+```
+
 ### Notifying user about agent response
 
 You can notifiy your user about agent response if chat was minimized by the user. To handle incoming messages your class must implement `LiveChatDelegate` protocol and set itself as `LiveChat.delegate`.