# Roles and permissions User roles make it convenient to configure different permissions for different users in your organization. You can decide what role a user will have when you [send them an invitation](/help/invite-new-users), and later [change a user's role](/help/roles-and-permissions#change-a-users-role) if needed. {!user-groups-intro.md!} !!! tip "" Learn about [channel permissions](/help/channel-permissions), including **public** and **private** channels. * **Organization owner**: Can manage users, public channels, organization settings, and billing. Organization owners can do anything that an organization administrator can do. * **Organization administrator**: Can manage users, public channels, and organization settings. Cannot make someone an owner, or change an existing owner's role. * **Moderator**: Can do anything that members can do, plus additional permissions [configured](/help/roles-and-permissions#manage-permissions) by your organization. * **Member**: This is the default role for most users. Members have access to all public channels. You can [configure different permissions](/help/restrict-permissions-of-new-members) for **new members** and **full members**, which is especially useful for [moderating open organizations](/help/moderating-open-organizations). New members automatically become full members after a configurable waiting period. * **Guest**: Can view and send messages in channels they have been added to. Guests cannot see other channels, unless they have been specifically added to the channel. See [guest users documentation](/help/guest-users) for additional details and configuration options. * **Billing administrator**: The user who upgrades the organization to a paid plan is, in addition to their normal role, a billing administrator. Billing administrators can manage billing for the organization. For example, someone from your billing department can be a **billing administrator**, but not an **administrator** for the organization. ## View users by role {!view-users-by-role.md!} ## Change a user's role {!change-a-users-role.md!} ## Manage permissions {start_tabs} {settings_tab|organization-permissions} 1. Review organization permissions, and modify as needed. {!save-changes.md!} {end_tabs} ## Related articles * [Change a user's role](/help/change-a-users-role) * [User groups](/help/user-groups) * [Channel permissions](/help/channel-permissions) * [Inviting new users](/help/invite-new-users) * [Zulip Cloud billing](/help/zulip-cloud-billing) * [Guest users](/help/guest-users)