When a new member joins your team, get them quickly up to speed by making them a member of your Office 365 Group. Give them access to all the shared Group conversations, files, the team OneNote notebook, and team calendar in a single step.
The following procedure describes how to perform these tasks using Outlook on the web.To set up a new member in your Group
In the Outlook folder pane, select Groups, the select your group.
Select the ellipsis icon on the right of the toolbar. Then select Members, and select Add members.
Enter the new Group member's name or email address at Enter a name or email address, and then select the new Group member.
For instructions on setting up Outlook for this tutorial, see the setup instructions in Unite your team with Groups.