> For the complete documentation index, see [llms.txt](https://ztrust.gitbook.io/ztrust-documentation/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://ztrust.gitbook.io/ztrust-documentation/user-manual-ztrust-v4.1/3.-guide-to-navigation/3.9-realm-settings.md).

# 3.9 Realm Settings

In Realm Settings, you can configure various options for users, applications, roles, and groups within the current realm.

What is a Realm in Ztrust ?

* A realm in Ztrust is essentially a space where we manage a set of users, roles, groups, and clients.
* Each realm is isolated and manages its own users and configurations.
* Realms allow us to separate different environments or applications within a single Ztrust instance.

<figure><img src="https://1778922777-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F3EUK5AUZv0UVaI5S0CTM%2Fuploads%2Fvy5hnl2zSIoRe97BXJ2D%2Fimage.png?alt=media&amp;token=3fc8acbb-5fd2-45c6-96dd-a805a546b165" alt=""><figcaption><p>Fig 3.9.a: Realm Settings, Realm Overview and Management</p></figcaption></figure>

**The Master Realm:**

* When we install and run Ztrust for the first time, there is a default realm called "master".
* The master realm is special because it is used for administration and managing all other realms.
* It contains the initial admin user who has permissions to create and manage other realms and users.