# Create a New Client

Proceed as follows to establish a new connection to a broker or to edit an existing connection.

<div data-full-width="true"><figure><img src="https://3489494878-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2F9GvUpaatBiReR43XFSMg%2Fuploads%2FqxuBekLbbTVQBAjm0lFa%2FDocs_Verbindungen%20-%20Verbindungen%20MQTT.png?alt=media&#x26;token=39bc0491-88e3-41ba-b2e0-7e790b9b99cd" alt=""><figcaption><p>Fig. 1 – Connections -> MQTT</p></figcaption></figure></div>

## Connect with a New Client

1. In the sidebar, click on **Connection \[A]**

   ▷ The "Connections" window opens
2. Select the **MQTT \[B]** tab
3. In the workspace, a list of all already connected brokers is displayed **\[C]**

   ◈ If you do not see any entries, no brokers have been connected yet

   ◈ Brokers that have been configured in other tenants are also displayed
4. Click on **\[D]** to connect to a new broker

   ▷ The [↗ "Client Details"](https://docs.buildings.ability.abb/collection/mandatory-base/platform-core/connect-hub/connectivity-as-a-service/connect-devices-via-mqtt/configure-client) open
5. Configure the broker as described in the chapter [↗ "Configure client"](https://docs.buildings.ability.abb/collection/mandatory-base/platform-core/connect-hub/connectivity-as-a-service/connect-devices-via-mqtt/configure-client)

## Edit Client

1. In the sidebar, click on **Connection \[A]**

   ▷ The "Connections" window opens
2. Select the **MQTT \[B]** tab
3. In the workspace, a list of all already connected brokers is displayed **\[C]**

   ◈ Brokers that have been configured in other tenants are also displayed
4. Click on **\[F]** to open a connected broker

   ▷ The [↗ "Client Details" ](https://docs.buildings.ability.abb/collection/mandatory-base/platform-core/connect-hub/connectivity-as-a-service/connect-devices-via-mqtt/configure-client)open
5. Configure the broker as described in the chapter [↗ "Configure client"](https://docs.buildings.ability.abb/collection/mandatory-base/platform-core/connect-hub/connectivity-as-a-service/connect-devices-via-mqtt/configure-client).