# Get started

## Installation

Ticket Guardian can be installed from [Zendesk Marketplace](https://www.zendesk.com/marketplace/apps/support/1012431/ticket-guardian/).

1. Click on **Install**
2. Select your Zendesk instance where Ticket Guardian should be added

Once installed, it will appear in the *Ticket sidebar*.

<figure><img src="https://105721993-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FlTtb82AO4SglfnBygniH%2Fuploads%2FVhcXFTg1ePFKhdn2noq8%2Fimage.png?alt=media&#x26;token=e27a1b7b-339d-47e3-a63c-7b8e5895d897" alt=""><figcaption></figcaption></figure>

## Concept

Ticket Guardian has a simple layout but powerful concept. It works based on **rules.**

**Rule** is a regular text / string that Ticket Guardian will scan for presence in Public response. If it is found - it will prevent the submission of the ticket (changing status) with a notification, informing which rule has caused prevention.

Simple put it - if your public reply contains text that you asked Ticket Guardian to find, it will prevent you from sending a response to the end-user, which in some cases can save end-users' frustration.