> For the complete documentation index, see [llms.txt](https://dev.guardian.hedera.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://dev.guardian.hedera.com/guardian/workspace/decentralized-guardian/connecting-your-mgs-instance-with-verra/before-you-begin.md).

# Before You Begin

To run a policy across two instances you need at least four users, as described below. Verra operates in this case as the main instance, while other instances operate as the dependent instances.

| **User**                    | **Where**          | **Purpose**                                                                                                              |
| --------------------------- | ------------------ | ------------------------------------------------------------------------------------------------------------------------ |
| Main standard registry      | Main instance      | Owns and publishes the policy.                                                                                           |
| Remote user                 | Main instance      | A local copy of the user created in a dependent instance. Holds the imported decentralized access key.                   |
| Dependent standard registry | Dependent instance | Approves the imported remote policy so local users can run it.                                                           |
| Dependent user              | Dependent instance | The project developer or VVB who requests access, registers for the policy, submits projects, etc. to the remote policy. |

You also need a policy that is ready to publish, or already published. This guide uses the VM0047 methodology published on the Verra’s UAT environment using the Hedera testnet (public link: 1785511586.942929104).

<img src="https://501642358-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FbKnJV8vV7zUxRwKIsJKg%2Fuploads%2F1eCkbrw4yuRVIhbJnaFc%2Funknown.png?alt=media&amp;token=e8e6a267-7361-471a-980c-7868a3b5e911" alt="" height="363" width="624">

*Figure 1. The Verra Portal. VM0047 in the first row is installed but not published yet.*

{% hint style="info" %}
Tip: Take note of the public link and, later, of the decentralized access key as you work through the setup. Both values are needed again at later steps.
{% endhint %}