Mentions

The Mentions tab in the left-hand menu options gives you a snapshot of all chats wherever you have been specifically tagged or mentioned so that you don't have to go looking around all the chats and messages from all tasks and action items. Simply check where all your inputs are needed, and navigate to those chats right from here. 

An important note here is that this also acts as a To-do list for you from the Tasks & Action items. Say, someone has asked you for an update or requested some information by tagging you in a chat. Now, you know you need to respond to it, but you may need to work a bit and then respond. So, until you specifically tick it off from here, the mention stays with you as a reminder that you need to respond to a particular message. 

You can mention any user by using the generic instant messaging convention of @user.