# Controller > See first: [Juju | Controller](https://canonical.com/juju/docs/juju-cli/3.6/reference/controller/#controller) > See also: [Manage Juju controllers](https://documentation.ubuntu.com/jaas/latest/howto/manage-juju-controllers.md#manage-juju-controllers) ## Controller tag A controller tag has the following format: ```text controller- ``` ## Controller permission A controller permission describes what an entity can do on a controller. ### List of controller permissions #### `administrator` Abilities: Can do anything that it is possible to do at the level of a controller. This grants permissions to all resources that inherit from controller access. #### `audit_log_viewer` Abilities: Can read audit logs. #### `can_addmodel` Abilities: Can host a model on this controller.