Google Chat and Google Rooms are two Google tools to improve communication and project management. Chat and Rooms are enabled by your Google administrator for your domain, and allow you to send instant messages using Chat to a computer or mobile device. Using Rooms a user can create workgroups for projects, assigning tasks, linking Google files and more.
Screenshot of Chat Account
Choose a chat service for your organization - Google Support
Select how you want to use Chat and classic Hangouts in your organization:
Chat preferred (default for new customers, and recommended for migration)—Chat works in Gmail and everywhere else. Classic Hangouts works on the web.
The “Chat preferred” service status setting provides the best migration experience if your goal is to upgrade users from classic Hangouts to Google Chat. It also ensures that your users can still talk to people outside your organization who still use classic Hangouts. (Google Support)
Chat and classic Hangouts—Classic Hangouts is included in Gmail and work everywhere. Chat works everywhere except in Gmail.
Chat only—Chat works in Gmail and everywhere else. Classic Hangouts clients are turned off.
Classic Hangouts only—Classic Hangouts works in Gmail and everywhere else. Chat clients are turned off.
Both turned off—All Chat and classic Hangouts clients are turned off.
In 2021 - all users will be migrated to Chat (timeline from Google)
Chat is integrated in the new Gmail app - for iOS and Google Play
Chat is as an app for iOS and Google Play
How To Create and Manage Group Messages on your iPhone or iPad|
If all members of your group consist of participants using Apple devices (iPhone, iPad or iPod Touch), group messages will be sent as iMessages. If you have at least one participant using other type of mobile devices (e.g, Android phones), then group messages will be sent as MMS (or SMS) messages.
Simple To Do list - does not put on your calendar
Share files
Can have outside users
Users need a Gmail account
Any files you add are under Files = single click to preview or click in the document to edit or set to pop out into its own window
Tasks - can add room tasks when checked off - it shows in the completed tasks at the bottom; can only assign one person, can assign a date and time. It does not make it into a task in your calendar - can only assign to one person (only those in that Room)...it will send them a chat telling them that they have been assigned a task
Can add a reaction, forward to an email, delete the chat
Follow or unfollow a task - unfollow
Pops up in chat just like a chat (unless you unfollow)
Reply - sends to all in the room who are following the chat
If starting a new thread and attach a file, it will automatically add the file to the Files list