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

# Define Your Authorization Model

> Define Your Authorization Model

This section has guides, concepts and examples that help you define an authorization model.

**When to use**

* If you are starting with Auth0 FGA and want to learn how to represent your organization's/system's authorization needs.
* If you are working on iterating on an authorization model you previously defined.

## Content

**Getting Started**

How to create an authorization model for your system starting from the requirements.

**Configuration Language**

Learn Auth0 FGA's configuration language syntax and its basics.

**Modeling Basics**

Learn the basics of modeling authorization and granting access to users.

**User Groups**

Learn to model user group membership, and to grant access to all members of a group.

**Roles and Permissions**

Learn to model roles for users at the object level and model permissions for those roles.

**Parent-Child objects**

Learn to model access based on parent-child relationships, e.g.: folders and documents.

**Block Lists**

Learn to model denying access if users are part of list of blocked users.

**Public Access**

Learn to model giving everyone specific access to an object, e.g.: everyone can read.

**Multiple Restrictions**

Learn to model requiring multiple privileges before granting access.

**Custom Roles**

Learn to model custom roles that are created by users.

**Contextual and Time-Based Authorization**

Learn to model and authorize when IP Address, time, and other dynamic and contextual restrictions are involved.

**Authorization Through Organization Context**

Learn to model and authorize when a user belongs to multiple organizations.

***

**Modeling Concepts**

Learn the underlying concepts/building blocks that can be used to build any model.

**Migrating**

Learn to migrate relations and models in a production environment.