You can adjust the members of Microsoft 365 groups that you own. 

  1. In a web browser, navigate to portal.office.com and select Outlook.
  2. Under the Groups section, select the name of the group.
  3. In the top right corner of the window, click on the members section.
  4. Right-click on the name of the person you would like to remove from the group.
  5. Click Remove from group.