# Adding Groups RealityHub allows you to group your Hosts to control various features, such as **launching all Engines simultaneously** or [assigning channels](https://zerodensitydocumentation.gitbook.io/docs/realityhub-1.3/realityhub-1.3/installation-and-configuration/configuration-steps/engine-module-configuration/channel-assignments) to a group of Engines. It is an essential feature for **multiple engine configurations**.
Groups
When you choose the Groups for the first time, it looks like the image above. To add a Group: * Go to **Main Menu** and select the **Configuration** * Select the **Groups** under the **Engines**
New Host Group Window
* Click on the **`+ (Plus)`** button to **Add New Host Group** * Define a **New Group Name** in the pop-up menu and click **`OK`**. To Assign an Engine(s) to the Group you defined:
Assigning Group to Engine
* Select the **Group** you defined earlier * Go to the **Assigned Engine** section * Click on **`+ (Plus)`** button inside the **Assign Engines to the Group** * In the pop-up menu, click on the **Engine** name, then click **`Select`** {% hint style="info" %} You can select multiple engines individually by pressing the **CTRL** button. For a **bulk selection**, press the **SHIFT** button on your keyboard. {% endhint %}
Assigned Engines to a Group
Your Host **Group** is ready.