This feature isn't available in the legacy free edition of Google Apps.
G Suite Migration for Microsoft® Exchange (GSMME) is a utility that migrates mail, calendar, and contact data from your Exchange Server or mail from an IMAP server to G Suite. You must meet the following system requirements before using G Suite Migration for Microsoft Exchange.
We recommend that you use the latest patches for both Windows and Outlook.
For complete instructions on using GSMME, see the Admin Guide (PDF).