Discussion means a one-to-one conversation or a group chat within your team members eliminating the need to switch different applications for internal communication.
Discussion Dash-board: It will consist of the topic of discussion, the members included in that discussion.
You may start conversing with your team members from "Plus Button", and you can also share files or documents. You may also share your location and contact information . You can also access such files from anywhere and at any time.