# Users

> Manage teams with users.

Synnax uses role-based access control (RBAC). Each user is assigned a role that determines what resources they can view, edit, or delete.

## Registering users

Register a user with the `Register a user` command in the [command palette](https://docs.synnaxlabs.com/reference/console/ui-overview#search-and-command-palette).

[](https://synnax.nyc3.cdn.digitaloceanspaces.com/docs/console/users/register-dark.mp4#t=0.001)

Select a role during registration. The new user can then log in with the registered username and password.

## Built-in roles

Synnax provides five built-in roles that cover common access patterns. Built-in roles cannot be deleted or renamed.

| Role         | Description                                                             | Key capabilities                                                                                                       |
| ------------ | ----------------------------------------------------------------------- | ---------------------------------------------------------------------------------------------------------------------- |
| **Owner**    | Full control of deployment, including user registration and security    | All actions on all resources; user management; security settings                                                       |
| **Engineer** | Full access to system configuration except user management              | Create/edit channels, projects, schematics, line plots, tasks, devices, ranges, tables, Arc code; view users and roles |
| **Operator** | View projects and visualizations; control hardware and data acquisition | Control hardware tasks; edit ranges and framers; view all resources; cannot modify system configuration                |
| **Host**     | For machines running the Synnax driver                                  | Manage devices, tasks, and Arc automations                                                                             |
| **Viewer**   | Read-only access to all resources                                       | View all resources; no edit or delete capabilities                                                                     |

## Assigning roles

Right-click the user in the users toolbar and select `Change role`. In the dialog, select a role and click `Assign`.

You can also drag a user onto a role in the resource tree.

[](https://synnax.nyc3.cdn.digitaloceanspaces.com/docs/console/users/modal-change-role-dark.mp4#t=0.001)

Root users cannot have their roles changed, and users cannot change their own roles.