Groups/Teams that are actively used are automatically renewed. Any of the following actions will prevent a group from entering the expiration process:
SharePoint: view, edit, download, move, share, or upload files.
Note: Viewing a SharePoint page alone does not count as an action for automatic renewal.
Outlook: add a member to the group, read or send a message from the group mailbox, or like a message (Outlook on the web).
Teams: visiting a Teams channel.
Yammer/Viva Engage: viewing a post within a Yammer community.