Using Custom User Groups
There are several primary uses of the custom user groups. The most helpful is through the ability to share views you may have made with users on their mobile apps. The applicability is that you can create a view and be the owner of the view, then enable a group of users to view this on the mobile app - thereby ensuring each sees what you want them to see as well as relieving each user from having to create their own view or copy yours. In this way, managers and management can construct in-depth custom views and share them easily with explicit groups of users.
To learn more about how to do this read the following about views: