> ## Documentation Index
> Fetch the complete documentation index at: https://auth0.com/llms.txt
> Use this file to discover all available pages before exploring further.

> Explains the basics of a user profile, how to create a user and view users and their profile details.

# Manage User Access to Applications

All users associated with a single Auth0 tenant are shared between the tenant's applications (and therefore have access to the applications).

* To keep users separate and restrict their access, we recommend that you [create an additional tenant](/docs/get-started/auth0-overview/create-tenants/create-multiple-tenants) with applications you want groups of users to access.

* To restrict users' access to certain applications, you can use [rules](/docs/customize/rules).

  * Inside a rule, the `context.clientName` and `context.clientID` variables are available to check which application the user is using for login.
  * See [this rule for an example](https://github.com/auth0/rules/blob/aeaf93bc058408e260192d0941a688963449d6be/src/rules/simple-user-whitelist-for-app.js).

* To restrict users from applications by configuring a new connection and only giving access to a specific application.

  * Go to [Dashboard > Authentication > Social](https://manage.auth0.com/#/connections/social) and click on a connection.
  * On the **Applications** tab, enable/disable applications.

* To disable users' access to your applications, you can [block and unblock users](/docs/manage-users/user-accounts/block-and-unblock-users) in the Dashboard.

## Learn more

* [Create Multiple Tenants](/docs/get-started/auth0-overview/create-tenants/create-multiple-tenants)
* [Select from Multiple Connection Options](/docs/libraries/lock/selecting-from-multiple-connection-options)
* [Set Up Multiple Environments](/docs/get-started/auth0-overview/create-tenants/set-up-multiple-environments)