Microsoft has formally unveiled Teams, its long-rumored competitor to the popular Slack and Atlassian HipChat business messaging platforms. So how do you enable it in your organization?
Assuming you have an Office 365 plan that includes Teams (most do), go to your Office 365 portal’s Admin settings, click the Services & Add-ins option, scroll down to the Microsoft Teams option (shown in Figure 1), click it, and set the switch to On. You’ll then get a variety of settings to choose from; the default is for all options to be enabled with the exception of bots.
from InfoWorld Cloud Computing http://www.infoworld.com/article/3137263/collaboration/how-to-get-started-with-microsoft-teams.html#tk.rss_cloudcomputing