name : modify-user-group.rst **To modify a user group** The following ``modify-user-group`` example adds a user to the user group. :: aws elasticache modify-user-group \ --user-group-id myusergroup \ --user-ids-to-add user1 Output:: { "UserGroupId": "myusergroup", "Status": "modifying", "Engine": "redis", "UserIds": [ "default" ], "PendingChanges": { "UserIdsToAdd": [ "user1" ] }, "ReplicationGroups": [], "ARN": "arn:aws:elasticache:us-west-2:xxxxxxxxxx52:usergroup:myusergroup" } For more information, see `Authenticating Users with Role-Based Access Control (RBAC) <https://docs.aws.amazon.com/AmazonElastiCache/latest/red-ug/Clusters.RBAC.html>`__ in the *Elasticache User Guide*.