Group Address Book 3 - Sateraito Office is a Chrome extension developed by Sateraito Office. It is a free add-on tool that allows Google Workspace users to easily access and manage the "Satellite Office - Group Address Book" from Gmail or Google Calendar.

With this extension, users can conveniently set the recipients (To, Cc, Bcc) when composing a Gmail message, add guests when creating a schedule in Google Calendar, and share files and documents on Google Drive, as well as on Google Sites.

Please note that in order to use the "Satellite Office - Group Address Book," it needs to be set up by a Google Workspace administrator.