Back in June, Microsoft announced that they are bringing a contact management experience to Outlook Mobile apps. Earlier this extended to only editing contacts, but in the latest update to version 2.2.52, users on Android are now able to do a lot more with Office 365 Groups.
With the new version, users are now able to create or delete a group directly from their phone and edit a group and add or remove group members.
The feature is available from the sidebar in the app and is available only to Office 365 users.
The update also brings the usual bug fixes and improvements.
Download the app here from Play Store.