This is another quick set of instructions on how to access and configure settings within the Google Admin Console. Our topic today is: Talk/Hangouts.
First, access the Admin Console (admin.google.com)
Finally the Sharing settings of Talk/Hangouts...
From here, you can select between any of your organizations created in the Admin Console to select the behavior of Talk/Hangouts. If for any reason an organization needs to have this access limited, disable Hangouts chat. Vice-versa, keep the App enabled for any organization needing access.
The original reason I needed to know this: A user was complaining of difficulty using Chat while logged into his email. After investigating and with a ticket request from Google, I stumbled upon the settings discussed in this blog post. This user was in an organization that had it's Enable Hangouts chat disabled. Once re-enabled, chat behavior returned to normal for him. We do not recall any time that one of us (sys admins) would have gone in to specifically disable his organization, so if Chat begins behaving funny or seemingly not working: this is a good setting to check on. Cheerio.