Updates about new features, products, or events, and the process of enrolling in programs.
If you are an administrator on your device, open command prompt as an admin, run this command to get the Microsoft 365 Insider tab to show up (make sure all your Office apps are closed):
reg add HKCU\Software\Policies\Microsoft\office\16.0\common /v insiderslabbehavior /t REG_DWORD /d 1
Reopen Office apps go to File --> Account and click on Microsoft 365 Insider tab, choose Beta or Current Channel Preview options.