If you need someone's attention you can address them directly in your message with a mention. You can mention someone in a 1:1 or group conversation.
Inside the conversation:
- Type and you will see a list of the group participants.
- Select one of the suggestions in the suggestions list to confirm the mention.
- Type a message and press the enter key.
If a person changes their name after being mentioned, the name in those mentions will not be changed. The new name will be shown in future mentions of that person.