One of the features we've been expecting WhatsApp to add is the support for mentions in group conversations. That way, not only you would be able to quote someone or some specific message, you'd also be able to directly address a contact inside a group to get their attention. This feature is now live in the latest WhatsApp beta v2.16.272.
When you're in a group chat, try typing the symbol @ and you'll get a list of all the participants in that chat. You can tap any of them or just type the first letters of anyone's name and it'll narrow down to them.Read More