This article will show how to join a Topic in the Chat menu.
Step 1: Tap the chat icon on the bottom navigation bar
Step 2: Next tap the pink plus icon and select "Join a Chat"
Step 3: You'll see a list of all the chat topics available for you to join, you probably want to join them all, but let's just pick one for now. Tap on the Topic to join it.
Step 4:Say hello to your colleagues, and then go back and see what other topics are available to you.