To install G-Chat for your whole company you must be a Google Admin.

Go to the Google Marketplace, search for Nectar and select Admin Install.

A pop-up will appear where you will need to click Continue to adjust what permissions you will give Nectar to access.

Select what groups you want to install the app for, agree to the Terms & Conditions and click Finish.

Once installed, your employees will be notified in their email chat that it has been installed.

To install G-Chat go into your G-mail account and go to the chat tab.

Then click Explore Apps, search for Nectar, and click Add. Then you can either have a singular chat, or add the app to an existing space.

Once it is added, you will have a separate chat designated that says Nectar (App). You will receive notifications here whenever you receive a shoutout. (see below)