Add New GroupGroup (Update ,Delete):
You can update or delete any group from the groups list by clicking on the three dots.
Group (Update ,Delete)
Assign User To Group:
You can assign user('s) to a chosen group by clicking on the three dots on the chosen group row from the groups list and click on users button.
You will see the list of users that assigned to this chosen group you can add or remove users from group like you want.
Assign User To Group