You can use this guide to integrate with Hangouts Chat. Google has sunset integrations Gmail version of Hangouts, and launched Hangouts Chat. (https://chat.google.com).
Firstly, open Squadcast Sidebar and go to integrations. Click on the Integrate button under "Google Hangouts".
You will be presented with your integration key, copy it.
Now head over to your Hangouts Chat account and select the room in which you want to install the bot.
Search for Squadcast bot and install it.
In order to integrate this room with your Squadcast organization, send the bot a message in the following format.
@Squadcast connect your-integration-key
where "your-integration-key" is the key obtained above.
That's it! Your integration is now good to go.