[jujucharms.com:jamesbeedy@external/common-infrastructure] ubuntu@ip-10-20-100-90:~ 
$ juju grant rahworkx@external admin common-infrastructure
[jujucharms.com:jamesbeedy@external/common-infrastructure] ubuntu@ip-10-20-100-90:~ 
$ juju show-model
common-infrastructure:
  name: common-infrastructure
  model-uuid: 29d4aea9-6c2f-46eb-8c59-95c27c8b585c
  controller-uuid: a030379a-940f-4760-8fcf-3062b41a04e7
  controller-name: jujucharms.com
  owner: jamesbeedy@external
  cloud: aws
  region: us-east-1
  type: ec2
  life: alive
  status:
    current: available
  users: {}